18123032 has 16 divisors (see below), whose sum is σ = 34622640. Its totient is φ = 8890336.

The previous prime is 18122989. The next prime is 18123041. The reversal of 18123032 is 23032181.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 18122995 and 18123013.

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, 20948 + ... + 21795.

It is an arithmetic number, because the mean of its divisors is an integer number (2163915).

Almost surely, 2^18123032 is an apocalyptic number.

It is an amenable number.

18123032 is a deficient number, since it is larger than the sum of its proper divisors (16499608).

18123032 is a wasteful number, since it uses less digits than its factorization.

18123032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42802 (or 42798 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 18123032 is about 4257.1154553289. The cubic root of 18123032 is about 262.6698860981.

The spelling of 18123032 in words is "eighteen million, one hundred twenty-three thousand, thirty-two".