16720084 has 12 divisors (see below), whose sum is σ = 29562484. Its totient is φ = 8273664.

The previous prime is 16720073. The next prime is 16720097. The reversal of 16720084 is 48002761.

It can be written as a sum of positive squares in 2 ways, for example, as 6300100 + 10419984 = 2510^2 + 3228^2 .

It is a super-2 number, since 2×16720084² = 559122417934112, 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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21159 + ... + 21934.

Almost surely, 2^16720084 is an apocalyptic number.

It is an amenable number.

16720084 is a deficient number, since it is larger than the sum of its proper divisors (12842400).

16720084 is a wasteful number, since it uses less digits than its factorization.

16720084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43194 (or 43192 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 16720084 is about 4089.0199314750. The cubic root of 16720084 is about 255.7090811456.

The spelling of 16720084 in words is "sixteen million, seven hundred twenty thousand, eighty-four".