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23887387068 = 2231990615589
BaseRepresentation
bin10110001111110011…
…001001100110111100
32021122202022222210120
4112033303021212330
5342410132341233
614550153334540
71503644303616
oct261763114674
967582288716
1023887387068
11a148897506
124767a07450
132338b8a87c
1412286c3db6
1594c1994b3
hex58fcc99bc

23887387068 has 12 divisors (see below), whose sum is σ = 55737236520. Its totient is φ = 7962462352.

The previous prime is 23887387067. The next prime is 23887387091. The reversal of 23887387068 is 86078378832.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23887387061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 995307783 + ... + 995307806.

It is an arithmetic number, because the mean of its divisors is an integer number (4644769710).

Almost surely, 223887387068 is an apocalyptic number.

It is an amenable number.

23887387068 is an abundant number, since it is smaller than the sum of its proper divisors (31849849452).

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

23887387068 is a wasteful number, since it uses less digits than its factorization.

23887387068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990615596 (or 1990615594 counting only the distinct ones).

The product of its (nonzero) digits is 21676032, while the sum is 60.

The spelling of 23887387068 in words is "twenty-three billion, eight hundred eighty-seven million, three hundred eighty-seven thousand, sixty-eight".

Divisors: 1 2 3 4 6 12 1990615589 3981231178 5971846767 7962462356 11943693534 23887387068