22513770 has 24 divisors (see below), whose sum is σ = 58536036. Its totient is φ = 6003648.

The previous prime is 22513769. The next prime is 22513783. The reversal of 22513770 is 7731522.

It can be written as a sum of positive squares in 2 ways, for example, as 22212369 + 301401 = 4713^2 + 549^2 .

It is a super-2 number, since 2×22513770² = 1013739679225800, which contains 22 as substring.

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, 124987 + ... + 125166.

Almost surely, 2^22513770 is an apocalyptic number.

22513770 is an abundant number, since it is smaller than the sum of its proper divisors (36022266).

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

22513770 is a wasteful number, since it uses less digits than its factorization.

22513770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250166 (or 250163 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 22513770 is about 4744.8677536892. The cubic root of 22513770 is about 282.3683883246.

The spelling of 22513770 in words is "twenty-two million, five hundred thirteen thousand, seven hundred seventy".