22890538 has 16 divisors (see below), whose sum is σ = 37771200. Its totient is φ = 10403580.

The previous prime is 22890529. The next prime is 22890563. The reversal of 22890538 is 83509822.

It is a junction number, because it is equal to n+sod(n) for n = 22890497 and 22890506.

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, 1638 + ... + 6961.

It is an arithmetic number, because the mean of its divisors is an integer number (2360700).

Almost surely, 2^22890538 is an apocalyptic number.

22890538 is a deficient number, since it is larger than the sum of its proper divisors (14880662).

22890538 is an equidigital number, since it uses as much as digits as its factorization.

22890538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8634 (or 8612 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 22890538 is about 4784.4057102215. The cubic root of 22890538 is about 283.9348276692.

The spelling of 22890538 in words is "twenty-two million, eight hundred ninety thousand, five hundred thirty-eight".