20674808 has 32 divisors (see below), whose sum is σ = 48332160. Its totient is φ = 8054880.

The previous prime is 20674781. The next prime is 20674811. The reversal of 20674808 is 80847602.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16166 + ... + 17397.

It is an arithmetic number, because the mean of its divisors is an integer number (1510380).

Almost surely, 2^20674808 is an apocalyptic number.

20674808 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20674808 is an abundant number, since it is smaller than the sum of its proper divisors (27657352).

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

20674808 is a wasteful number, since it uses less digits than its factorization.

20674808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33587 (or 33583 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 20674808 is about 4546.9559047785. The cubic root of 20674808 is about 274.4609075244.

The spelling of 20674808 in words is "twenty million, six hundred seventy-four thousand, eight hundred eight".