22940988 has 24 divisors (see below), whose sum is σ = 61176192. Its totient is φ = 6554544.

The previous prime is 22940987. The next prime is 22940989. The reversal of 22940988 is 88904922.

It is an interprime number because it is at equal distance from previous prime (22940987) and next prime (22940989).

It is a super-2 number, since 2×22940988² = 1052577860832288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22940987) 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 7 ways as a sum of consecutive naturals, for example, 136470 + ... + 136637.

It is an arithmetic number, because the mean of its divisors is an integer number (2549008).

Almost surely, 2^22940988 is an apocalyptic number.

22940988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22940988 is an abundant number, since it is smaller than the sum of its proper divisors (38235204).

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

22940988 is a wasteful number, since it uses less digits than its factorization.

22940988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273121 (or 273119 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 22940988 is about 4789.6751455605. The cubic root of 22940988 is about 284.1432689815.

The spelling of 22940988 in words is "twenty-two million, nine hundred forty thousand, nine hundred eighty-eight".