22955790 has 64 divisors (see below), whose sum is σ = 64737792. Its totient is φ = 5136000.

The previous prime is 22955789. The next prime is 22955813. The reversal of 22955790 is 9755922.

It is a Harshad number since it is a multiple of its sum of digits (39).

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 31 ways as a sum of consecutive naturals, for example, 1615 + ... + 6965.

It is an arithmetic number, because the mean of its divisors is an integer number (1011528).

Almost surely, 2^22955790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22955790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32368896).

22955790 is an abundant number, since it is smaller than the sum of its proper divisors (41782002).

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

22955790 is a wasteful number, since it uses less digits than its factorization.

22955790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5385.

The product of its (nonzero) digits is 56700, while the sum is 39.

The square root of 22955790 is about 4791.2200951323. The cubic root of 22955790 is about 284.2043675476.

The spelling of 22955790 in words is "twenty-two million, nine hundred fifty-five thousand, seven hundred ninety".