16887980 has 24 divisors (see below), whose sum is σ = 37007712. Its totient is φ = 6461312.

The previous prime is 16887971. The next prime is 16888007. The reversal of 16887980 is 8978861.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17897 + ... + 18816.

It is an arithmetic number, because the mean of its divisors is an integer number (1541988).

Almost surely, 2^16887980 is an apocalyptic number.

16887980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16887980 is an abundant number, since it is smaller than the sum of its proper divisors (20119732).

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

16887980 is a wasteful number, since it uses less digits than its factorization.

16887980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36745 (or 36743 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 47.

The square root of 16887980 is about 4109.4987528895. The cubic root of 16887980 is about 256.5621395553.

The spelling of 16887980 in words is "sixteen million, eight hundred eighty-seven thousand, nine hundred eighty".