16980020 has 24 divisors (see below), whose sum is σ = 35989800. Its totient is φ = 6728832.

The previous prime is 16980017. The next prime is 16980031. The reversal of 16980020 is 2008961.

It can be written as a sum of positive squares in 4 ways, for example, as 3467044 + 13512976 = 1862^2 + 3676^2 .

It is a congruent number.

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, 1715 + ... + 6074.

It is an arithmetic number, because the mean of its divisors is an integer number (1499575).

Almost surely, 2^16980020 is an apocalyptic number.

16980020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16980020 is an abundant number, since it is smaller than the sum of its proper divisors (19009780).

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

16980020 is a wasteful number, since it uses less digits than its factorization.

16980020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7907 (or 7905 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 16980020 is about 4120.6819823908. The cubic root of 16980020 is about 257.0273858385.

Adding to 16980020 its reverse (2008961), we get a palindrome (18988981).

The spelling of 16980020 in words is "sixteen million, nine hundred eighty thousand, twenty".