22512474 has 24 divisors (see below), whose sum is σ = 48900852. Its totient is φ = 7485120.

The previous prime is 22512443. The next prime is 22512487. The reversal of 22512474 is 47421522.

It can be written as a sum of positive squares in 2 ways, for example, as 21206025 + 1306449 = 4605^2 + 1143^2 .

It is a super-2 number, since 2×22512474² = 1013622971201352, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 6942 + ... + 9654.

Almost surely, 2^22512474 is an apocalyptic number.

22512474 is an abundant number, since it is smaller than the sum of its proper divisors (26388378).

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

22512474 is a wasteful number, since it uses less digits than its factorization.

22512474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3182 (or 3179 counting only the distinct ones).

The product of its digits is 4480, while the sum is 27.

The square root of 22512474 is about 4744.7311831125. The cubic root of 22512474 is about 282.3629700635.

Adding to 22512474 its reverse (47421522), we get a palindrome (69933996).

The spelling of 22512474 in words is "twenty-two million, five hundred twelve thousand, four hundred seventy-four".