22490930 has 32 divisors (see below), whose sum is σ = 50474880. Its totient is φ = 7009920.

The previous prime is 22490917. The next prime is 22490939. The reversal of 22490930 is 3909422.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22490893 and 22490902.

It is not an unprimeable number, because it can be changed into a prime (22490939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13835 + ... + 15374.

It is an arithmetic number, because the mean of its divisors is an integer number (1577340).

Almost surely, 2^22490930 is an apocalyptic number.

22490930 is an abundant number, since it is smaller than the sum of its proper divisors (27983950).

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

22490930 is a wasteful number, since it uses less digits than its factorization.

22490930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29234.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 22490930 is about 4742.4603319374. The cubic root of 22490930 is about 282.2728693580.

The spelling of 22490930 in words is "twenty-two million, four hundred ninety thousand, nine hundred thirty".