23936990 has 48 divisors (see below), whose sum is σ = 54689904. Its totient is φ = 7459200.

The previous prime is 23936971. The next prime is 23936993. The reversal of 23936990 is 9963932.

It is a happy number.

It is a super-3 number, since 3×23936990³ (a number of 23 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23936993) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3170 + ... + 7610.

It is an arithmetic number, because the mean of its divisors is an integer number (1139373).

Almost surely, 2^23936990 is an apocalyptic number.

23936990 is an abundant number, since it is smaller than the sum of its proper divisors (30752914).

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

23936990 is a wasteful number, since it uses less digits than its factorization.

23936990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4473 (or 4466 counting only the distinct ones).

The product of its (nonzero) digits is 78732, while the sum is 41.

The square root of 23936990 is about 4892.5443278523. The cubic root of 23936990 is about 288.1972590868.

The spelling of 23936990 in words is "twenty-three million, nine hundred thirty-six thousand, nine hundred ninety".