22042536 has 16 divisors (see below), whose sum is σ = 55106400. Its totient is φ = 7347504.

The previous prime is 22042511. The next prime is 22042547. The reversal of 22042536 is 63524022.

It is a super-2 number, since 2×22042536² = 971746786622592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 918439 = 22042536 / (2 + 2 + 0 + 4 + 2 + 5 + 3 + 6).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 459196 + ... + 459243.

It is an arithmetic number, because the mean of its divisors is an integer number (3444150).

Almost surely, 2^22042536 is an apocalyptic number.

It is an amenable number.

22042536 is an abundant number, since it is smaller than the sum of its proper divisors (33063864).

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

22042536 is a wasteful number, since it uses less digits than its factorization.

22042536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918448 (or 918444 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 22042536 is about 4694.9479230339. The cubic root of 22042536 is about 280.3844039940.

Adding to 22042536 its reverse (63524022), we get a palindrome (85566558).

It can be divided in two parts, 22042 and 536, that added together give a triangular number (22578 = T₂₁₂).

The spelling of 22042536 in words is "twenty-two million, forty-two thousand, five hundred thirty-six".