22438530 has 24 divisors (see below), whose sum is σ = 58340412. Its totient is φ = 5983584.

The previous prime is 22438511. The next prime is 22438553. The reversal of 22438530 is 3583422.

It can be written as a sum of positive squares in 2 ways, for example, as 22382361 + 56169 = 4731^2 + 237^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22438494 and 22438503.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124569 + ... + 124748.

Almost surely, 2^22438530 is an apocalyptic number.

22438530 is an abundant number, since it is smaller than the sum of its proper divisors (35901882).

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

22438530 is a wasteful number, since it uses less digits than its factorization.

22438530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249330 (or 249327 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 22438530 is about 4736.9325517681. The cubic root of 22438530 is about 282.0534831410.

The spelling of 22438530 in words is "twenty-two million, four hundred thirty-eight thousand, five hundred thirty".