22422840 has 64 divisors (see below), whose sum is σ = 73388160. Its totient is φ = 5435520.

The previous prime is 22422839. The next prime is 22422853. The reversal of 22422840 is 4822422.

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 22422840.

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 15 ways as a sum of consecutive naturals, for example, 7174 + ... + 9813.

It is an arithmetic number, because the mean of its divisors is an integer number (1146690).

Almost surely, 2^22422840 is an apocalyptic number.

22422840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22422840 is an abundant number, since it is smaller than the sum of its proper divisors (50965320).

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

22422840 is a wasteful number, since it uses less digits than its factorization.

22422840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17012 (or 17008 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 22422840 is about 4735.2761271123. The cubic root of 22422840 is about 281.9877264413.

The spelling of 22422840 in words is "twenty-two million, four hundred twenty-two thousand, eight hundred forty".