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13001442400 = 255229619187
BaseRepresentation
bin11000001101111001…
…00100010001100000
31020120002111201001201
430012330210101200
5203111332124100
65550042010544
7640121302612
oct140674442140
936502451051
1013001442400
115571a80121
12262a1a6a54
1312c27883ab
148b4a22db2
1551163936a
hex306f24460

13001442400 has 144 divisors (see below), whose sum is σ = 33376145040. Its totient is φ = 4938393600.

The previous prime is 13001442373. The next prime is 13001442407. The reversal of 13001442400 is 424410031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13001442407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1410607 + ... + 1419793.

It is an arithmetic number, because the mean of its divisors is an integer number (231778785).

Almost surely, 213001442400 is an apocalyptic number.

13001442400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13001442400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16688072520).

13001442400 is an abundant number, since it is smaller than the sum of its proper divisors (20374702640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13001442400 is a wasteful number, since it uses less digits than its factorization.

13001442400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9297 (or 9284 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 13001442400 its reverse (424410031), we get a palindrome (13425852431).

The spelling of 13001442400 in words is "thirteen billion, one million, four hundred forty-two thousand, four hundred".

Divisors: 1 2 4 5 8 10 16 20 25 29 32 40 50 58 61 80 100 116 122 145 160 200 232 244 290 305 400 464 488 580 610 725 800 928 976 1160 1220 1450 1525 1769 1952 2320 2440 2900 3050 3538 4640 4880 5800 6100 7076 8845 9187 9760 11600 12200 14152 17690 18374 23200 24400 28304 35380 36748 44225 45935 48800 56608 70760 73496 88450 91870 141520 146992 176900 183740 229675 266423 283040 293984 353800 367480 459350 532846 560407 707600 734960 918700 1065692 1120814 1332115 1415200 1469920 1837400 2131384 2241628 2664230 2802035 3674800 4262768 4483256 5328460 5604070 6660575 7349600 8525536 8966512 10656920 11208140 13321150 14010175 16251803 17933024 21313840 22416280 26642300 28020350 32503606 42627680 44832560 53284600 56040700 65007212 81259015 89665120 106569200 112081400 130014424 162518030 213138400 224162800 260028848 325036060 406295075 448325600 520057696 650072120 812590150 1300144240 1625180300 2600288480 3250360600 6500721200 13001442400