22788313 has 4 divisors (see below), whose sum is σ = 24128820. Its totient is φ = 21447808.

The previous prime is 22788281. The next prime is 22788329. The reversal of 22788313 is 31388722.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11478544 + 11309769 = 3388^2 + 3363^2 .

It is a cyclic number.

It is not a de Polignac number, because 22788313 - 2⁵ = 22788281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22788343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 670228 + ... + 670261.

It is an arithmetic number, because the mean of its divisors is an integer number (6032205).

Almost surely, 2^22788313 is an apocalyptic number.

It is an amenable number.

22788313 is a deficient number, since it is larger than the sum of its proper divisors (1340507).

22788313 is a wasteful number, since it uses less digits than its factorization.

22788313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340506.

The product of its digits is 16128, while the sum is 34.

The square root of 22788313 is about 4773.7106112541. The cubic root of 22788313 is about 283.5115297338.

The spelling of 22788313 in words is "twenty-two million, seven hundred eighty-eight thousand, three hundred thirteen".