22620906 has 96 divisors (see below), whose sum is σ = 64396800. Its totient is φ = 5559840.

The previous prime is 22620901. The next prime is 22620911. The reversal of 22620906 is 60902622.

It is an interprime number because it is at equal distance from previous prime (22620901) and next prime (22620911).

It is a self number, because there is not a number n which added to its sum of digits gives 22620906.

It is not an unprimeable number, because it can be changed into a prime (22620901) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 25905 + ... + 26763.

It is an arithmetic number, because the mean of its divisors is an integer number (670800).

Almost surely, 2^22620906 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22620906, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32198400).

22620906 is an abundant number, since it is smaller than the sum of its proper divisors (41775894).

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

22620906 is a wasteful number, since it uses less digits than its factorization.

22620906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904 (or 901 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 22620906 is about 4756.1440264147. The cubic root of 22620906 is about 282.8155807139.

The spelling of 22620906 in words is "twenty-two million, six hundred twenty thousand, nine hundred six".