20622536 has 48 divisors (see below), whose sum is σ = 44195760. Its totient is φ = 8946080.

The previous prime is 20622529. The next prime is 20622583. The reversal of 20622536 is 63522602.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46331 + ... + 46773.

It is an arithmetic number, because the mean of its divisors is an integer number (920745).

Almost surely, 2^20622536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20622536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22097880).

20622536 is an abundant number, since it is smaller than the sum of its proper divisors (23573224).

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

20622536 is a wasteful number, since it uses less digits than its factorization.

20622536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506 (or 479 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 20622536 is about 4541.2042455719. The cubic root of 20622536 is about 274.2294063274.

The spelling of 20622536 in words is "twenty million, six hundred twenty-two thousand, five hundred thirty-six".