23385690 has 24 divisors (see below), whose sum is σ = 60803028. Its totient is φ = 6236160.

The previous prime is 23385683. The next prime is 23385707. The reversal of 23385690 is 9658332.

It can be written as a sum of positive squares in 2 ways, for example, as 21372129 + 2013561 = 4623^2 + 1419^2 .

It is a super-2 number, since 2×23385690² = 1093780993552200, which contains 22 as substring.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 129831 + ... + 130010.

Almost surely, 2^23385690 is an apocalyptic number.

23385690 is an abundant number, since it is smaller than the sum of its proper divisors (37417338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23385690 is a wasteful number, since it uses less digits than its factorization.

23385690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259854 (or 259851 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 23385690 is about 4835.8753085662. The cubic root of 23385690 is about 285.9675334394.

The spelling of 23385690 in words is "twenty-three million, three hundred eighty-five thousand, six hundred ninety".