18876680 has 32 divisors (see below), whose sum is σ = 43939800. Its totient is φ = 7289856.

The previous prime is 18876679. The next prime is 18876701. The reversal of 18876680 is 8667881.

It can be written as a sum of positive squares in 4 ways, for example, as 18438436 + 438244 = 4294^2 + 662^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6977 + ... + 9296.

Almost surely, 2^18876680 is an apocalyptic number.

18876680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18876680 is an abundant number, since it is smaller than the sum of its proper divisors (25063120).

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

18876680 is a wasteful number, since it uses less digits than its factorization.

18876680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16313 (or 16309 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 18876680 is about 4344.7301412171. The cubic root of 18876680 is about 266.2616002939.

The spelling of 18876680 in words is "eighteen million, eight hundred seventy-six thousand, six hundred eighty".