28815683 has 12 divisors (see below), whose sum is σ = 31420368. Its totient is φ = 26413920.

The previous prime is 28815667. The next prime is 28815713. The reversal of 28815683 is 38651882.

It is not a de Polignac number, because 28815683 - 2⁴ = 28815667 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28815683.

It is not an unprimeable number, because it can be changed into a prime (28815613) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27713 + ... + 28733.

It is an arithmetic number, because the mean of its divisors is an integer number (2618364).

Almost surely, 2^28815683 is an apocalyptic number.

28815683 is a deficient number, since it is larger than the sum of its proper divisors (2604685).

28815683 is a wasteful number, since it uses less digits than its factorization.

28815683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214 (or 1201 counting only the distinct ones).

The product of its digits is 92160, while the sum is 41.

The square root of 28815683 is about 5368.0241243869. The cubic root of 28815683 is about 306.5794018927.

The spelling of 28815683 in words is "twenty-eight million, eight hundred fifteen thousand, six hundred eighty-three".