22740865 has 8 divisors (see below), whose sum is σ = 31187520. Its totient is φ = 15593712.

The previous prime is 22740863. The next prime is 22740877. The reversal of 22740865 is 56804722.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22740865 - 2¹ = 22740863 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22740865.

It is not an unprimeable number, because it can be changed into a prime (22740863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324835 + ... + 324904.

It is an arithmetic number, because the mean of its divisors is an integer number (3898440).

Almost surely, 2^22740865 is an apocalyptic number.

It is an amenable number.

22740865 is a deficient number, since it is larger than the sum of its proper divisors (8446655).

22740865 is an equidigital number, since it uses as much as digits as its factorization.

22740865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649751.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 22740865 is about 4768.7383027379. The cubic root of 22740865 is about 283.3146246778.

The spelling of 22740865 in words is "twenty-two million, seven hundred forty thousand, eight hundred sixty-five".