22142536 has 16 divisors (see below), whose sum is σ = 44711100. Its totient is φ = 10219584.

The previous prime is 22142521. The next prime is 22142567. The reversal of 22142536 is 63524122.

It can be written as a sum of positive squares in 2 ways, for example, as 22033636 + 108900 = 4694^2 + 330^2 .

It is a super-2 number, since 2×22142536² = 980583801022592, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22142536.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106351 + ... + 106558.

Almost surely, 2^22142536 is an apocalyptic number.

22142536 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

22142536 is an abundant number, since it is smaller than the sum of its proper divisors (22568564).

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

22142536 is a wasteful number, since it uses less digits than its factorization.

22142536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212928 (or 212924 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 22142536 is about 4705.5856171150. The cubic root of 22142536 is about 280.8077694730.

Adding to 22142536 its reverse (63524122), we get a palindrome (85666658).

The spelling of 22142536 in words is "twenty-two million, one hundred forty-two thousand, five hundred thirty-six".