16320880 has 40 divisors (see below), whose sum is σ = 39176064. Its totient is φ = 6316800.

The previous prime is 16320809. The next prime is 16320919. The reversal of 16320880 is 8802361.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×16320880² = 532742247948800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 811 + ... + 5770.

Almost surely, 2^16320880 is an apocalyptic number.

16320880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16320880 is an abundant number, since it is smaller than the sum of its proper divisors (22855184).

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

16320880 is a wasteful number, since it uses less digits than its factorization.

16320880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6625 (or 6619 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 16320880 is about 4039.9108901064. The cubic root of 16320880 is about 253.6575872565.

The spelling of 16320880 in words is "sixteen million, three hundred twenty thousand, eight hundred eighty".