22649539 has 16 divisors (see below), whose sum is σ = 26167680. Its totient is φ = 19388160.

The previous prime is 22649509. The next prime is 22649563. The reversal of 22649539 is 93594622.

It is not a de Polignac number, because 22649539 - 2¹¹ = 22647491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22649509) 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, 63987 + ... + 64339.

It is an arithmetic number, because the mean of its divisors is an integer number (1635480).

Almost surely, 2^22649539 is an apocalyptic number.

22649539 is a deficient number, since it is larger than the sum of its proper divisors (3518141).

22649539 is a wasteful number, since it uses less digits than its factorization.

22649539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690.

The product of its digits is 116640, while the sum is 40.

The square root of 22649539 is about 4759.1531809766. The cubic root of 22649539 is about 282.9348574607.

The spelling of 22649539 in words is "twenty-two million, six hundred forty-nine thousand, five hundred thirty-nine".