23257605 has 24 divisors (see below), whose sum is σ = 43288992. Its totient is φ = 10631712.

The previous prime is 23257603. The next prime is 23257607. The reversal of 23257605 is 50675232.

It is an interprime number because it is at equal distance from previous prime (23257603) and next prime (23257607).

It is not a de Polignac number, because 23257605 - 2¹ = 23257603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23257603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15087 + ... + 16556.

It is an arithmetic number, because the mean of its divisors is an integer number (1803708).

Almost surely, 2^23257605 is an apocalyptic number.

It is an amenable number.

23257605 is a deficient number, since it is larger than the sum of its proper divisors (20031387).

23257605 is a wasteful number, since it uses less digits than its factorization.

23257605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31665 (or 31658 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 30.

The square root of 23257605 is about 4822.6139177836. The cubic root of 23257605 is about 285.4444895415. Note that the first 4 decimals are identical.

The spelling of 23257605 in words is "twenty-three million, two hundred fifty-seven thousand, six hundred five".