22538530 has 32 divisors (see below), whose sum is σ = 47318400. Its totient is φ = 7726320.

The previous prime is 22538507. The next prime is 22538533. The reversal of 22538530 is 3583522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22538533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145 + ... + 6715.

It is an arithmetic number, because the mean of its divisors is an integer number (1478700).

Almost surely, 2^22538530 is an apocalyptic number.

22538530 is an abundant number, since it is smaller than the sum of its proper divisors (24779870).

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

22538530 is an equidigital number, since it uses as much as digits as its factorization.

22538530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6599 (or 6585 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 22538530 is about 4747.4761716095. The cubic root of 22538530 is about 282.4718639585.

The spelling of 22538530 in words is "twenty-two million, five hundred thirty-eight thousand, five hundred thirty".