23688451 has 2 divisors, whose sum is σ = 23688452. Its totient is φ = 23688450.

The previous prime is 23688443. The next prime is 23688479. The reversal of 23688451 is 15488632.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23688451 - 2³ = 23688443 is a prime.

It is a super-2 number, since 2×23688451² = 1122285421558802, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23688451.

It is not a weakly prime, because it can be changed into another prime (23688491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11844225 + 11844226.

It is an arithmetic number, because the mean of its divisors is an integer number (11844226).

Almost surely, 2^23688451 is an apocalyptic number.

23688451 is a deficient number, since it is larger than the sum of its proper divisors (1).

23688451 is an equidigital number, since it uses as much as digits as its factorization.

23688451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46080, while the sum is 37.

The square root of 23688451 is about 4867.0782816799. The cubic root of 23688451 is about 287.1963311618.

The spelling of 23688451 in words is "twenty-three million, six hundred eighty-eight thousand, four hundred fifty-one".