18004374 has 24 divisors (see below), whose sum is σ = 39594360. Its totient is φ = 5911488.

The previous prime is 18004373. The next prime is 18004379. The reversal of 18004374 is 47340081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18004373) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6259 + ... + 8670.

It is an arithmetic number, because the mean of its divisors is an integer number (1649765).

Almost surely, 2^18004374 is an apocalyptic number.

18004374 is an abundant number, since it is smaller than the sum of its proper divisors (21589986).

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

18004374 is a wasteful number, since it uses less digits than its factorization.

18004374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15004 (or 15001 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 18004374 is about 4243.1561366511. The cubic root of 18004374 is about 262.0953657069.

The spelling of 18004374 in words is "eighteen million, four thousand, three hundred seventy-four".