23256761 has 4 divisors (see below), whose sum is σ = 25371024. Its totient is φ = 21142500.

The previous prime is 23256743. The next prime is 23256763. The reversal of 23256761 is 16765232.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23256761 is a prime.

It is a super-2 number, since 2×23256761² = 1081753864422242, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23256763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1057115 + ... + 1057136.

It is an arithmetic number, because the mean of its divisors is an integer number (6342756).

Almost surely, 2^23256761 is an apocalyptic number.

It is an amenable number.

23256761 is a deficient number, since it is larger than the sum of its proper divisors (2114263).

23256761 is a wasteful number, since it uses less digits than its factorization.

23256761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2114262.

The product of its digits is 15120, while the sum is 32.

The square root of 23256761 is about 4822.5264125767. The cubic root of 23256761 is about 285.4410366485.

The spelling of 23256761 in words is "twenty-three million, two hundred fifty-six thousand, seven hundred sixty-one".