22013642 has 12 divisors (see below), whose sum is σ = 38411730. Its totient is φ = 9434376.

The previous prime is 22013617. The next prime is 22013653. The reversal of 22013642 is 24631022.

It can be written as a sum of positive squares in only one way, i.e., 12397441 + 9616201 = 3521^2 + 3101^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 112217 + ... + 112412.

Almost surely, 2^22013642 is an apocalyptic number.

22013642 is a deficient number, since it is larger than the sum of its proper divisors (16398088).

22013642 is a wasteful number, since it uses less digits than its factorization.

22013642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224645 (or 224638 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 22013642 is about 4691.8697765390. The cubic root of 22013642 is about 280.2618384022.

Adding to 22013642 its reverse (24631022), we get a palindrome (46644664).

The spelling of 22013642 in words is "twenty-two million, thirteen thousand, six hundred forty-two".