20622965 has 16 divisors (see below), whose sum is σ = 27120960. Its totient is φ = 14929920.

The previous prime is 20622911. The next prime is 20622977. The reversal of 20622965 is 56922602.

It is a happy number.

It is not a de Polignac number, because 20622965 - 2²² = 16428661 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13406 + ... + 14864.

It is an arithmetic number, because the mean of its divisors is an integer number (1695060).

Almost surely, 2^20622965 is an apocalyptic number.

It is an amenable number.

20622965 is a deficient number, since it is larger than the sum of its proper divisors (6497995).

20622965 is a wasteful number, since it uses less digits than its factorization.

20622965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1732.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 20622965 is about 4541.2514794933. The cubic root of 20622965 is about 274.2313078653.

The spelling of 20622965 in words is "twenty million, six hundred twenty-two thousand, nine hundred sixty-five".