22139547 has 16 divisors (see below), whose sum is σ = 31269120. Its totient is φ = 13904352.

The previous prime is 22139527. The next prime is 22139561. The reversal of 22139547 is 74593122.

It is not a de Polignac number, because 22139547 - 2⁶ = 22139483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22139527) 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, 2229 + ... + 7017.

It is an arithmetic number, because the mean of its divisors is an integer number (1954320).

Almost surely, 2^22139547 is an apocalyptic number.

22139547 is a deficient number, since it is larger than the sum of its proper divisors (9129573).

22139547 is a wasteful number, since it uses less digits than its factorization.

22139547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4882.

The product of its digits is 15120, while the sum is 33.

The square root of 22139547 is about 4705.2680051194. The cubic root of 22139547 is about 280.7951335794.

The spelling of 22139547 in words is "twenty-two million, one hundred thirty-nine thousand, five hundred forty-seven".