22955840 has 56 divisors (see below), whose sum is σ = 57058560. Its totient is φ = 8780288.

The previous prime is 22955833. The next prime is 22955861. The reversal of 22955840 is 4855922.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 22955840.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5801 + ... + 8919.

Almost surely, 2^22955840 is an apocalyptic number.

22955840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22955840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28529280).

22955840 is an abundant number, since it is smaller than the sum of its proper divisors (34102720).

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

22955840 is a wasteful number, since it uses less digits than its factorization.

22955840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3159 (or 3149 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 22955840 is about 4791.2253130071. The cubic root of 22955840 is about 284.2045738892.

The spelling of 22955840 in words is "twenty-two million, nine hundred fifty-five thousand, eight hundred forty".