22122639 has 40 divisors (see below), whose sum is σ = 41213568. Its totient is φ = 11489040.

The previous prime is 22122629. The next prime is 22122643. The reversal of 22122639 is 93622122.

22122639 is a `hidden beast` number, since 2 + 2 + 1 + 22 + 639 = 666.

It is not a de Polignac number, because 22122639 - 2¹⁵ = 22089871 is a prime.

It is a super-4 number, since 4×22122639⁴ (a number of 30 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122629) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 4464 + ... + 8010.

Almost surely, 2^22122639 is an apocalyptic number.

22122639 is a deficient number, since it is larger than the sum of its proper divisors (19090929).

22122639 is a wasteful number, since it uses less digits than its factorization.

22122639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3577 (or 3568 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 22122639 is about 4703.4709523925. The cubic root of 22122639 is about 280.7236341755.

It can be divided in two parts, 2212 and 2639, that added together give a triangular number (4851 = T₉₈).

The spelling of 22122639 in words is "twenty-two million, one hundred twenty-two thousand, six hundred thirty-nine".