16891080 has 32 divisors (see below), whose sum is σ = 50673600. Its totient is φ = 4504256.

The previous prime is 16891067. The next prime is 16891097. The reversal of 16891080 is 8019861.

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, 70260 + ... + 70499.

It is an arithmetic number, because the mean of its divisors is an integer number (1583550).

Almost surely, 2^16891080 is an apocalyptic number.

16891080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16891080 is an abundant number, since it is smaller than the sum of its proper divisors (33782520).

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

16891080 is a wasteful number, since it uses less digits than its factorization.

16891080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140773 (or 140769 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 16891080 is about 4109.8759105355. The cubic root of 16891080 is about 256.5778369916.

The spelling of 16891080 in words is "sixteen million, eight hundred ninety-one thousand, eighty".