22539705 has 32 divisors (see below), whose sum is σ = 38496384. Its totient is φ = 11222016.

The previous prime is 22539703. The next prime is 22539707. The reversal of 22539705 is 50793522.

It is an interprime number because it is at equal distance from previous prime (22539703) and next prime (22539707).

It is not a de Polignac number, because 22539705 - 2¹ = 22539703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22539703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39754 + ... + 40316.

It is an arithmetic number, because the mean of its divisors is an integer number (1203012).

Almost surely, 2^22539705 is an apocalyptic number.

It is an amenable number.

22539705 is a deficient number, since it is larger than the sum of its proper divisors (15956679).

22539705 is a wasteful number, since it uses less digits than its factorization.

22539705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745.

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 22539705 is about 4747.5999199596. The cubic root of 22539705 is about 282.4767725701.

The spelling of 22539705 in words is "twenty-two million, five hundred thirty-nine thousand, seven hundred five".