23728507 has 16 divisors (see below), whose sum is σ = 26818272. Its totient is φ = 20805120.

The previous prime is 23728501. The next prime is 23728517. The reversal of 23728507 is 70582732.

It is a cyclic number.

It is not a de Polignac number, because 23728507 - 2³ = 23728499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23728501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70243 + ... + 70579.

It is an arithmetic number, because the mean of its divisors is an integer number (1676142).

Almost surely, 2^23728507 is an apocalyptic number.

23728507 is a deficient number, since it is larger than the sum of its proper divisors (3089765).

23728507 is a wasteful number, since it uses less digits than its factorization.

23728507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 23728507 is about 4871.1915380120. The cubic root of 23728507 is about 287.3581182724.

The spelling of 23728507 in words is "twenty-three million, seven hundred twenty-eight thousand, five hundred seven".