20626808 has 8 divisors (see below), whose sum is σ = 38675280. Its totient is φ = 10313400.

The previous prime is 20626789. The next prime is 20626841. The reversal of 20626808 is 80862602.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1289168 + ... + 1289183.

It is an arithmetic number, because the mean of its divisors is an integer number (4834410).

Almost surely, 2^20626808 is an apocalyptic number.

It is an amenable number.

20626808 is a deficient number, since it is larger than the sum of its proper divisors (18048472).

20626808 is a wasteful number, since it uses less digits than its factorization.

20626808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2578357 (or 2578353 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 20626808 is about 4541.6745810329. The cubic root of 20626808 is about 274.2483407453.

The spelling of 20626808 in words is "twenty million, six hundred twenty-six thousand, eight hundred eight".