22057530 has 32 divisors (see below), whose sum is σ = 57751488. Its totient is φ = 5347200.

The previous prime is 22057507. The next prime is 22057531. The reversal of 22057530 is 3575022.

It is a self number, because there is not a number n which added to its sum of digits gives 22057530.

It is not an unprimeable number, because it can be changed into a prime (22057531) 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, 33091 + ... + 33750.

It is an arithmetic number, because the mean of its divisors is an integer number (1804734).

Almost surely, 2^22057530 is an apocalyptic number.

22057530 is an abundant number, since it is smaller than the sum of its proper divisors (35693958).

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

22057530 is a wasteful number, since it uses less digits than its factorization.

22057530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66862.

The product of its (nonzero) digits is 2100, while the sum is 24.

The square root of 22057530 is about 4696.5444743982. The cubic root of 22057530 is about 280.4479649029.

The spelling of 22057530 in words is "twenty-two million, fifty-seven thousand, five hundred thirty".