20927616 has 32 divisors (see below), whose sum is σ = 55590000. Its totient is φ = 6975744.

The previous prime is 20927609. The next prime is 20927639. The reversal of 20927616 is 61672902.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×20927616² = 875930222886912, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26866 + ... + 27633.

Almost surely, 2^20927616 is an apocalyptic number.

It is an amenable number.

20927616 is an abundant number, since it is smaller than the sum of its proper divisors (34662384).

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

20927616 is an equidigital number, since it uses as much as digits as its factorization.

20927616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54516 (or 54504 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 20927616 is about 4574.6711357211. The cubic root of 20927616 is about 275.5750654857.

The spelling of 20927616 in words is "twenty million, nine hundred twenty-seven thousand, six hundred sixteen".