20622966 has 64 divisors (see below), whose sum is σ = 51383808. Its totient is φ = 5372928.

The previous prime is 20622911. The next prime is 20622977. The reversal of 20622966 is 66922602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58246 + ... + 58598.

It is an arithmetic number, because the mean of its divisors is an integer number (802872).

Almost surely, 2^20622966 is an apocalyptic number.

20622966 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20622966, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25691904).

20622966 is an abundant number, since it is smaller than the sum of its proper divisors (30760842).

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

20622966 is a wasteful number, since it uses less digits than its factorization.

20622966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 20622966 is about 4541.2515895951. The cubic root of 20622966 is about 274.2313122978.

The spelling of 20622966 in words is "twenty million, six hundred twenty-two thousand, nine hundred sixty-six".