18979704 has 32 divisors (see below), whose sum is σ = 52722000. Its totient is φ = 6326496.

The previous prime is 18979703. The next prime is 18979721. The reversal of 18979704 is 40797981.

It is a self number, because there is not a number n which added to its sum of digits gives 18979704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18979703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43719 + ... + 44150.

Almost surely, 2^18979704 is an apocalyptic number.

It is an amenable number.

18979704 is an abundant number, since it is smaller than the sum of its proper divisors (33742296).

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

18979704 is a wasteful number, since it uses less digits than its factorization.

18979704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87884 (or 87874 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The square root of 18979704 is about 4356.5702106129. The cubic root of 18979704 is about 266.7451171962.

It can be divided in two parts, 18979 and 704, that added together give a 9-th power (19683 = 3⁹).

The spelling of 18979704 in words is "eighteen million, nine hundred seventy-nine thousand, seven hundred four".