22040508 has 24 divisors (see below), whose sum is σ = 58774912. Its totient is φ = 6297264.

The previous prime is 22040507. The next prime is 22040519. The reversal of 22040508 is 80504022.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22040503) 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, 131110 + ... + 131277.

Almost surely, 2^22040508 is an apocalyptic number.

22040508 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22040508 is an abundant number, since it is smaller than the sum of its proper divisors (36734404).

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

22040508 is a wasteful number, since it uses less digits than its factorization.

22040508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262401 (or 262399 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 22040508 is about 4694.7319412294. The cubic root of 22040508 is about 280.3758049077.

The spelling of 22040508 in words is "twenty-two million, forty thousand, five hundred eight".