22390536 has 32 divisors (see below), whose sum is σ = 63973440. Its totient is φ = 6397248.

The previous prime is 22390519. The next prime is 22390553. The reversal of 22390536 is 63509322.

It is an interprime number because it is at equal distance from previous prime (22390519) and next prime (22390553).

It is a super-2 number, since 2×22390536² = 1002672204734592, which contains 22 as substring.

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, 66471 + ... + 66806.

It is an arithmetic number, because the mean of its divisors is an integer number (1999170).

Almost surely, 2^22390536 is an apocalyptic number.

It is an amenable number.

22390536 is an abundant number, since it is smaller than the sum of its proper divisors (41582904).

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

22390536 is a wasteful number, since it uses less digits than its factorization.

22390536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133293 (or 133289 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 22390536 is about 4731.8639033683. The cubic root of 22390536 is about 281.8522439074.

Adding to 22390536 its reverse (63509322), we get a palindrome (85899858).

The spelling of 22390536 in words is "twenty-two million, three hundred ninety thousand, five hundred thirty-six".