23872690 has 8 divisors (see below), whose sum is σ = 42970860. Its totient is φ = 9549072.

The previous prime is 23872669. The next prime is 23872699. The reversal of 23872690 is 9627832.

It can be written as a sum of positive squares in 2 ways, for example, as 21893041 + 1979649 = 4679^2 + 1407^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×23872690² = 1139810655672200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23872699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1193625 + ... + 1193644.

Almost surely, 2^23872690 is an apocalyptic number.

23872690 is a deficient number, since it is larger than the sum of its proper divisors (19098170).

23872690 is a wasteful number, since it uses less digits than its factorization.

23872690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2387276.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 23872690 is about 4885.9686859414. The cubic root of 23872690 is about 287.9389740168.

The spelling of 23872690 in words is "twenty-three million, eight hundred seventy-two thousand, six hundred ninety".