16626920 has 16 divisors (see below), whose sum is σ = 37410660. Its totient is φ = 6650752.

The previous prime is 16626859. The next prime is 16626941. The reversal of 16626920 is 2962661.

It can be written as a sum of positive squares in 2 ways, for example, as 14760964 + 1865956 = 3842^2 + 1366^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207797 + ... + 207876.

Almost surely, 2^16626920 is an apocalyptic number.

16626920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16626920 is an abundant number, since it is smaller than the sum of its proper divisors (20783740).

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

16626920 is a wasteful number, since it uses less digits than its factorization.

16626920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415684 (or 415680 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 16626920 is about 4077.6120462840. The cubic root of 16626920 is about 255.2332608647.

The spelling of 16626920 in words is "sixteen million, six hundred twenty-six thousand, nine hundred twenty".