16031980 has 24 divisors (see below), whose sum is σ = 33768000. Its totient is φ = 6393600.

The previous prime is 16031963. The next prime is 16031993. The reversal of 16031980 is 8913061.

It is a happy number.

16031980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 7021 + ... + 9019.

It is an arithmetic number, because the mean of its divisors is an integer number (1407000).

Almost surely, 2^16031980 is an apocalyptic number.

16031980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16031980 is an abundant number, since it is smaller than the sum of its proper divisors (17736020).

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

16031980 is a wasteful number, since it uses less digits than its factorization.

16031980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2409 (or 2407 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 16031980 is about 4003.9955044930. The cubic root of 16031980 is about 252.1519827299.

It can be divided in two parts, 1603 and 1980, that multiplied together give a triangular number (3173940 = T₂₅₁₉).

The spelling of 16031980 in words is "sixteen million, thirty-one thousand, nine hundred eighty".