22690840 has 32 divisors (see below), whose sum is σ = 51230880. Its totient is φ = 9044992.

The previous prime is 22690813. The next prime is 22690861. The reversal of 22690840 is 4809622.

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, 13317 + ... + 14923.

It is an arithmetic number, because the mean of its divisors is an integer number (1600965).

Almost surely, 2^22690840 is an apocalyptic number.

22690840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22690840 is an abundant number, since it is smaller than the sum of its proper divisors (28540040).

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

22690840 is a wasteful number, since it uses less digits than its factorization.

22690840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1971 (or 1967 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 22690840 is about 4763.4903169840. The cubic root of 22690840 is about 283.1067284640.

The spelling of 22690840 in words is "twenty-two million, six hundred ninety thousand, eight hundred forty".