22856739 has 4 divisors (see below), whose sum is σ = 30475656. Its totient is φ = 15237824.

The previous prime is 22856737. The next prime is 22856741. The reversal of 22856739 is 93765822.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (22856737) and next prime (22856741).

It is a cyclic number.

It is not a de Polignac number, because 22856739 - 2¹ = 22856737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22856739.

It is not an unprimeable number, because it can be changed into a prime (22856731) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3809454 + ... + 3809459.

It is an arithmetic number, because the mean of its divisors is an integer number (7618914).

Almost surely, 2^22856739 is an apocalyptic number.

22856739 is a deficient number, since it is larger than the sum of its proper divisors (7618917).

22856739 is an equidigital number, since it uses as much as digits as its factorization.

22856739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7618916.

The product of its digits is 181440, while the sum is 42.

The square root of 22856739 is about 4780.8722007600. The cubic root of 22856739 is about 283.7950109400.

The spelling of 22856739 in words is "twenty-two million, eight hundred fifty-six thousand, seven hundred thirty-nine".