18879760 has 20 divisors (see below), whose sum is σ = 43895628. Its totient is φ = 7551872.

The previous prime is 18879743. The next prime is 18879793. The reversal of 18879760 is 6797881.

It can be written as a sum of positive squares in 2 ways, for example, as 1971216 + 16908544 = 1404^2 + 4112^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 18879760.

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, 117919 + ... + 118078.

Almost surely, 2^18879760 is an apocalyptic number.

18879760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18879760 is an abundant number, since it is smaller than the sum of its proper divisors (25015868).

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

18879760 is a wasteful number, since it uses less digits than its factorization.

18879760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236010 (or 236004 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 46.

The square root of 18879760 is about 4345.0845791538. The cubic root of 18879760 is about 266.2760809676.

The spelling of 18879760 in words is "eighteen million, eight hundred seventy-nine thousand, seven hundred sixty".