20622900 has 36 divisors (see below), whose sum is σ = 59669792. Its totient is φ = 5499360.

The previous prime is 20622869. The next prime is 20622911. The reversal of 20622900 is 922602.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34072 + ... + 34671.

Almost surely, 2^20622900 is an apocalyptic number.

20622900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20622900 is an abundant number, since it is smaller than the sum of its proper divisors (39046892).

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

20622900 is a wasteful number, since it uses less digits than its factorization.

20622900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68760 (or 68753 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 20622900 is about 4541.2443228701. The cubic root of 20622900 is about 274.2310197552.

The spelling of 20622900 in words is "twenty million, six hundred twenty-two thousand, nine hundred".