22743639 has 16 divisors (see below), whose sum is σ = 33827040. Its totient is φ = 15102720.

The previous prime is 22743607. The next prime is 22743649. The reversal of 22743639 is 93634722.

It is a happy number.

It is not a de Polignac number, because 22743639 - 2⁵ = 22743607 is a prime.

It is a super-2 number, since 2×22743639² = 1034546229924642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22743649) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 5959 + ... + 8999.

It is an arithmetic number, because the mean of its divisors is an integer number (2114190).

Almost surely, 2^22743639 is an apocalyptic number.

22743639 is a deficient number, since it is larger than the sum of its proper divisors (11083401).

22743639 is a wasteful number, since it uses less digits than its factorization.

22743639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3327 (or 3321 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 22743639 is about 4769.0291464825. The cubic root of 22743639 is about 283.3261440698.

It can be divided in two parts, 227436 and 39, that added together give a triangular number (227475 = T₆₇₄).

The spelling of 22743639 in words is "twenty-two million, seven hundred forty-three thousand, six hundred thirty-nine".