18720960 has 56 divisors (see below), whose sum is σ = 59442096. Its totient is φ = 4992000.

The previous prime is 18720959. The next prime is 18720967. The reversal of 18720960 is 6902781.

It is not an unprimeable number, because it can be changed into a prime (18720967) 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, 8791 + ... + 10710.

It is an arithmetic number, because the mean of its divisors is an integer number (1061466).

Almost surely, 2^18720960 is an apocalyptic number.

18720960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18720960 is an abundant number, since it is smaller than the sum of its proper divisors (40721136).

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

18720960 is a wasteful number, since it uses less digits than its factorization.

18720960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19521 (or 19511 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 18720960 is about 4326.7724691738. The cubic root of 18720960 is about 265.5274176274.

The spelling of 18720960 in words is "eighteen million, seven hundred twenty thousand, nine hundred sixty".