22139544 has 32 divisors (see below), whose sum is σ = 63256320. Its totient is φ = 6325536.

The previous prime is 22139527. The next prime is 22139561. The reversal of 22139544 is 44593122.

It is an interprime number because it is at equal distance from previous prime (22139527) and next prime (22139561).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 65724 + ... + 66059.

It is an arithmetic number, because the mean of its divisors is an integer number (1976760).

Almost surely, 2^22139544 is an apocalyptic number.

22139544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22139544 is an abundant number, since it is smaller than the sum of its proper divisors (41116776).

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

22139544 is a wasteful number, since it uses less digits than its factorization.

22139544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131799 (or 131795 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 22139544 is about 4705.2676863277. The cubic root of 22139544 is about 280.7951208964.

The spelling of 22139544 in words is "twenty-two million, one hundred thirty-nine thousand, five hundred forty-four".