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23001163460 = 2251129504613
BaseRepresentation
bin10101011010111110…
…011110011011000100
32012100222202011112222
4111122332132123010
5334101244212320
614322214431512
71442663443412
oct253276363304
965328664488
1023001163460
119833614600
12455b062598
1322273a88c2
141182b122b2
158e948e825
hex55af9e6c4

23001163460 has 36 divisors (see below), whose sum is σ = 53092773804. Its totient is φ = 8364058560.

The previous prime is 23001163457. The next prime is 23001163477. The reversal of 23001163460 is 6436110032.

It can be written as a sum of positive squares in 2 ways, for example, as 4324114564 + 18677048896 = 65758^2 + 136664^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4749887 + ... + 4754726.

Almost surely, 223001163460 is an apocalyptic number.

23001163460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23001163460 is an abundant number, since it is smaller than the sum of its proper divisors (30091610344).

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

23001163460 is a wasteful number, since it uses less digits than its factorization.

23001163460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9504644 (or 9504631 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 23001163460 its reverse (6436110032), we get a palindrome (29437273492).

The spelling of 23001163460 in words is "twenty-three billion, one million, one hundred sixty-three thousand, four hundred sixty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 121 220 242 484 605 1210 2420 9504613 19009226 38018452 47523065 95046130 104550743 190092260 209101486 418202972 522753715 1045507430 1150058173 2091014860 2300116346 4600232692 5750290865 11500581730 23001163460