20676920 has 32 divisors (see below), whose sum is σ = 50753520. Its totient is φ = 7518720.

The previous prime is 20676919. The next prime is 20676961. The reversal of 20676920 is 2967602.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 23057 + ... + 23936.

Almost surely, 2^20676920 is an apocalyptic number.

20676920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20676920 is an abundant number, since it is smaller than the sum of its proper divisors (30076600).

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

20676920 is a wasteful number, since it uses less digits than its factorization.

20676920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47015 (or 47011 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 20676920 is about 4547.1881421380. The cubic root of 20676920 is about 274.4702529026.

The spelling of 20676920 in words is "twenty million, six hundred seventy-six thousand, nine hundred twenty".