18023996 has 12 divisors (see below), whose sum is σ = 32913552. Its totient is φ = 8620128.

The previous prime is 18023981. The next prime is 18024011. The reversal of 18023996 is 69932081.

It is an interprime number because it is at equal distance from previous prime (18023981) and next prime (18024011).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97865 + ... + 98048.

It is an arithmetic number, because the mean of its divisors is an integer number (2742796).

Almost surely, 2^18023996 is an apocalyptic number.

It is an amenable number.

18023996 is a deficient number, since it is larger than the sum of its proper divisors (14889556).

18023996 is a wasteful number, since it uses less digits than its factorization.

18023996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195940 (or 195938 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 18023996 is about 4245.4677009724. The cubic root of 18023996 is about 262.1905456911.

The spelling of 18023996 in words is "eighteen million, twenty-three thousand, nine hundred ninety-six".