22739865 has 32 divisors (see below), whose sum is σ = 38858880. Its totient is φ = 11321856.

The previous prime is 22739803. The next prime is 22739891. The reversal of 22739865 is 56893722.

It is not a de Polignac number, because 22739865 - 2⁷ = 22739737 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20259 + ... + 21351.

It is an arithmetic number, because the mean of its divisors is an integer number (1214340).

Almost surely, 2^22739865 is an apocalyptic number.

It is an amenable number.

22739865 is a deficient number, since it is larger than the sum of its proper divisors (16119015).

22739865 is a wasteful number, since it uses less digits than its factorization.

22739865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193.

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

The square root of 22739865 is about 4768.6334520489. The cubic root of 22739865 is about 283.3104718194.

The spelling of 22739865 in words is "twenty-two million, seven hundred thirty-nine thousand, eight hundred sixty-five".