23257528 has 32 divisors (see below), whose sum is σ = 50112000. Its totient is φ = 9912672.

The previous prime is 23257523. The next prime is 23257529. The reversal of 23257528 is 82575232.

It is a junction number, because it is equal to n+sod(n) for n = 23257493 and 23257502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23257523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10101 + ... + 12187.

It is an arithmetic number, because the mean of its divisors is an integer number (1566000).

Almost surely, 2^23257528 is an apocalyptic number.

23257528 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

23257528 is an abundant number, since it is smaller than the sum of its proper divisors (26854472).

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

23257528 is a wasteful number, since it uses less digits than its factorization.

23257528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2299 (or 2295 counting only the distinct ones).

The product of its digits is 33600, while the sum is 34.

The square root of 23257528 is about 4822.6059345545. The cubic root of 23257528 is about 285.4441745298. Note that the first 3 decimals are identical.

The spelling of 23257528 in words is "twenty-three million, two hundred fifty-seven thousand, five hundred twenty-eight".