23728687 has 2 divisors, whose sum is σ = 23728688. Its totient is φ = 23728686.

The previous prime is 23728681. The next prime is 23728693. The reversal of 23728687 is 78682732.

It is a balanced prime because it is at equal distance from previous prime (23728681) and next prime (23728693).

It is a cyclic number.

It is not a de Polignac number, because 23728687 - 2²³ = 15340079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23728681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11864343 + 11864344.

It is an arithmetic number, because the mean of its divisors is an integer number (11864344).

Almost surely, 2^23728687 is an apocalyptic number.

23728687 is a deficient number, since it is larger than the sum of its proper divisors (1).

23728687 is an equidigital number, since it uses as much as digits as its factorization.

23728687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 225792, while the sum is 43.

The square root of 23728687 is about 4871.2100139493. The cubic root of 23728687 is about 287.3588448855.

The spelling of 23728687 in words is "twenty-three million, seven hundred twenty-eight thousand, six hundred eighty-seven".