22631490 has 48 divisors (see below), whose sum is σ = 67249728. Its totient is φ = 5172768.

The previous prime is 22631473. The next prime is 22631491. The reversal of 22631490 is 9413622.

22631490 is a `hidden beast` number, since 22 + 631 + 4 + 9 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (22631491) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17332 + ... + 18591.

It is an arithmetic number, because the mean of its divisors is an integer number (1401036).

Almost surely, 2^22631490 is an apocalyptic number.

22631490 is an abundant number, since it is smaller than the sum of its proper divisors (44618238).

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

22631490 is a wasteful number, since it uses less digits than its factorization.

22631490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35943 (or 35940 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 22631490 is about 4757.2565623477. The cubic root of 22631490 is about 282.8596822982.

The spelling of 22631490 in words is "twenty-two million, six hundred thirty-one thousand, four hundred ninety".