22622640 has 40 divisors (see below), whose sum is σ = 70130928. Its totient is φ = 6032640.

The previous prime is 22622629. The next prime is 22622641. The reversal of 22622640 is 4622622.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 22622640.

It is not an unprimeable number, because it can be changed into a prime (22622641) by changing a digit.

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, 46891 + ... + 47370.

Almost surely, 2^22622640 is an apocalyptic number.

22622640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22622640 is an abundant number, since it is smaller than the sum of its proper divisors (47508288).

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

22622640 is a wasteful number, since it uses less digits than its factorization.

22622640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94277 (or 94271 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 22622640 is about 4756.3263134482. The cubic root of 22622640 is about 282.8228069156.

The spelling of 22622640 in words is "twenty-two million, six hundred twenty-two thousand, six hundred forty".