23156536 has 16 divisors (see below), whose sum is σ = 46758600. Its totient is φ = 10687584.

The previous prime is 23156503. The next prime is 23156591. The reversal of 23156536 is 63565132.

It is a junction number, because it is equal to n+sod(n) for n = 23156498 and 23156507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111226 + ... + 111433.

Almost surely, 2^23156536 is an apocalyptic number.

23156536 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

23156536 is an abundant number, since it is smaller than the sum of its proper divisors (23602064).

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

23156536 is a wasteful number, since it uses less digits than its factorization.

23156536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222678 (or 222674 counting only the distinct ones).

The product of its digits is 16200, while the sum is 31.

The square root of 23156536 is about 4812.1238554302. The cubic root of 23156536 is about 285.0304102156.

The spelling of 23156536 in words is "twenty-three million, one hundred fifty-six thousand, five hundred thirty-six".