23257536 has 56 divisors (see below), whose sum is σ = 63672720. Its totient is φ = 7483392.

The previous prime is 23257529. The next prime is 23257543. The reversal of 23257536 is 63575232.

It is an interprime number because it is at equal distance from previous prime (23257529) and next prime (23257543).

It is a junction number, because it is equal to n+sod(n) for n = 23257497 and 23257506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3480 + ... + 7656.

Almost surely, 2^23257536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23257536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31836360).

23257536 is an abundant number, since it is smaller than the sum of its proper divisors (40415184).

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

23257536 is a wasteful number, since it uses less digits than its factorization.

23257536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4221 (or 4211 counting only the distinct ones).

The product of its digits is 37800, while the sum is 33.

The square root of 23257536 is about 4822.6067639815. The cubic root of 23257536 is about 285.4442072583. Note that the first 3 decimals are identical.

The spelling of 23257536 in words is "twenty-three million, two hundred fifty-seven thousand, five hundred thirty-six".