23985506 has 32 divisors (see below), whose sum is σ = 38707200. Its totient is φ = 11129040.

The previous prime is 23985497. The next prime is 23985517. The reversal of 23985506 is 60558932.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23985506.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288941 + ... + 289023.

It is an arithmetic number, because the mean of its divisors is an integer number (1209600).

Almost surely, 2^23985506 is an apocalyptic number.

It is a pronic number, being equal to 4897×4898.

23985506 is a deficient number, since it is larger than the sum of its proper divisors (14721694).

23985506 is a wasteful number, since it uses less digits than its factorization.

23985506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 23985506 is about 4897.4999744768. The cubic root of 23985506 is about 288.3918357982.

The spelling of 23985506 in words is "twenty-three million, nine hundred eighty-five thousand, five hundred six".