16922720 has 24 divisors (see below), whose sum is σ = 39980304. Its totient is φ = 6769024.

The previous prime is 16922713. The next prime is 16922743. The reversal of 16922720 is 2722961.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52724 + ... + 53043.

It is an arithmetic number, because the mean of its divisors is an integer number (1665846).

Almost surely, 2^16922720 is an apocalyptic number.

16922720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16922720 is an abundant number, since it is smaller than the sum of its proper divisors (23057584).

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

16922720 is a wasteful number, since it uses less digits than its factorization.

16922720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105782 (or 105774 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 16922720 is about 4113.7233742681. The cubic root of 16922720 is about 256.7379423872.

The spelling of 16922720 in words is "sixteen million, nine hundred twenty-two thousand, seven hundred twenty".