23257897 has 16 divisors (see below), whose sum is σ = 25762240. Its totient is φ = 20865600.

The previous prime is 23257877. The next prime is 23257909. The reversal of 23257897 is 79875232.

It is a cyclic number.

It is not a de Polignac number, because 23257897 - 2⁷ = 23257769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23257877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110122 + ... + 110332.

It is an arithmetic number, because the mean of its divisors is an integer number (1610140).

Almost surely, 2^23257897 is an apocalyptic number.

It is an amenable number.

23257897 is a deficient number, since it is larger than the sum of its proper divisors (2504343).

23257897 is a wasteful number, since it uses less digits than its factorization.

23257897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424.

The product of its digits is 211680, while the sum is 43.

The square root of 23257897 is about 4822.6441917272. The cubic root of 23257897 is about 285.4456841248.

The spelling of 23257897 in words is "twenty-three million, two hundred fifty-seven thousand, eight hundred ninety-seven".