28815068 has 12 divisors (see below), whose sum is σ = 53392752. Its totient is φ = 13560000.

The previous prime is 28815043. The next prime is 28815079. The reversal of 28815068 is 86051882.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211808 + ... + 211943.

It is an arithmetic number, because the mean of its divisors is an integer number (4449396).

Almost surely, 2^28815068 is an apocalyptic number.

It is an amenable number.

28815068 is a deficient number, since it is larger than the sum of its proper divisors (24577684).

28815068 is a wasteful number, since it uses less digits than its factorization.

28815068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423772 (or 423770 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 38.

The square root of 28815068 is about 5367.9668404341. The cubic root of 28815068 is about 306.5772208157.

The spelling of 28815068 in words is "twenty-eight million, eight hundred fifteen thousand, sixty-eight".