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23030441940 = 22351160757487
BaseRepresentation
bin10101011100101110…
…001010011111010100
32012110000211200002010
4111130232022133110
5334131243120230
614325142144220
71443500345412
oct253456123724
965400750063
1023030441940
1198490a19a0
124568a22070
13223048a34c
1411869742b2
158ebd249b0
hex55cb8a7d4

23030441940 has 96 divisors (see below), whose sum is σ = 70464651264. Its totient is φ = 5573842560.

The previous prime is 23030441927. The next prime is 23030441947. The reversal of 23030441940 is 4914403032.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 23030441898 and 23030441907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23030441947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 371877 + ... + 429363.

It is an arithmetic number, because the mean of its divisors is an integer number (734006784).

Almost surely, 223030441940 is an apocalyptic number.

23030441940 is a gapful number since it is divisible by the number (20) 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 23030441940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35232325632).

23030441940 is an abundant number, since it is smaller than the sum of its proper divisors (47434209324).

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

23030441940 is a wasteful number, since it uses less digits than its factorization.

23030441940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58117 (or 58115 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 23030441940 its reverse (4914403032), we get a palindrome (27944844972).

The spelling of 23030441940 in words is "twenty-three billion, thirty million, four hundred forty-one thousand, nine hundred forty".

Divisors: 1 2 3 4 5 6 10 11 12 15 20 22 30 33 44 55 60 66 110 132 165 220 330 607 660 1214 1821 2428 3035 3642 6070 6677 7284 9105 12140 13354 18210 20031 26708 33385 36420 40062 57487 66770 80124 100155 114974 133540 172461 200310 229948 287435 344922 400620 574870 632357 689844 862305 1149740 1264714 1724610 1897071 2529428 3161785 3449220 3794142 6323570 7588284 9485355 12647140 18970710 34894609 37941420 69789218 104683827 139578436 174473045 209367654 348946090 383840699 418735308 523419135 697892180 767681398 1046838270 1151522097 1535362796 1919203495 2093676540 2303044194 3838406990 4606088388 5757610485 7676813980 11515220970 23030441940