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149286400 = 2952107109
BaseRepresentation
bin10001110010111…
…10111000000000
3101101220112102221
420321132320000
5301204131100
622451420424
73461625214
oct1071367000
9341815387
10149286400
11772a509a
1241bb4714
1324c0c163
1415b80944
15d18d01a
hex8e5ee00

149286400 has 120 divisors (see below), whose sum is σ = 376750440. Its totient is φ = 58613760.

The previous prime is 149286377. The next prime is 149286407. The reversal of 149286400 is 4682941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149286407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1369546 + ... + 1369654.

It is an arithmetic number, because the mean of its divisors is an integer number (3139587).

Almost surely, 2149286400 is an apocalyptic number.

149286400 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 149286400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188375220).

149286400 is an abundant number, since it is smaller than the sum of its proper divisors (227464040).

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

149286400 is a wasteful number, since it uses less digits than its factorization.

149286400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 149286400 is about 12218.2813848757. The cubic root of 149286400 is about 530.4853747475.

The spelling of 149286400 in words is "one hundred forty-nine million, two hundred eighty-six thousand, four hundred".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 107 109 128 160 200 214 218 256 320 400 428 436 512 535 545 640 800 856 872 1070 1090 1280 1600 1712 1744 2140 2180 2560 2675 2725 3200 3424 3488 4280 4360 5350 5450 6400 6848 6976 8560 8720 10700 10900 11663 12800 13696 13952 17120 17440 21400 21800 23326 27392 27904 34240 34880 42800 43600 46652 54784 55808 58315 68480 69760 85600 87200 93304 116630 136960 139520 171200 174400 186608 233260 273920 279040 291575 342400 348800 373216 466520 583150 684800 697600 746432 933040 1166300 1369600 1395200 1492864 1866080 2332600 2985728 3732160 4665200 5971456 7464320 9330400 14928640 18660800 29857280 37321600 74643200 149286400