28822313 has 4 divisors (see below), whose sum is σ = 31039428. Its totient is φ = 26605200.

The previous prime is 28822309. The next prime is 28822349. The reversal of 28822313 is 31322882.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31322882 = 2 ⋅15661441.

It can be written as a sum of positive squares in 2 ways, for example, as 3952144 + 24870169 = 1988^2 + 4987^2 .

It is a cyclic number.

It is not a de Polignac number, because 28822313 - 2² = 28822309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28822613) 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, 1108538 + ... + 1108563.

It is an arithmetic number, because the mean of its divisors is an integer number (7759857).

Almost surely, 2^28822313 is an apocalyptic number.

It is an amenable number.

28822313 is a deficient number, since it is larger than the sum of its proper divisors (2217115).

28822313 is a wasteful number, since it uses less digits than its factorization.

28822313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2217114.

The product of its digits is 4608, while the sum is 29.

The square root of 28822313 is about 5368.6416345292. The cubic root of 28822313 is about 306.6029129968.

The spelling of 28822313 in words is "twenty-eight million, eight hundred twenty-two thousand, three hundred thirteen".