28613715 has 32 divisors (see below), whose sum is σ = 51905280. Its totient is φ = 13343616.

The previous prime is 28613707. The next prime is 28613719. The reversal of 28613715 is 51731682.

It is not a de Polignac number, because 28613715 - 2³ = 28613707 is a prime.

It is a super-2 number, since 2×28613715² = 1637489372202450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28613719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157 + ... + 7566.

It is an arithmetic number, because the mean of its divisors is an integer number (1622040).

Almost surely, 2^28613715 is an apocalyptic number.

28613715 is a deficient number, since it is larger than the sum of its proper divisors (23291565).

28613715 is a wasteful number, since it uses less digits than its factorization.

28613715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7763.

The product of its digits is 10080, while the sum is 33.

The square root of 28613715 is about 5349.1789089542. The cubic root of 28613715 is about 305.8614542189.

The spelling of 28613715 in words is "twenty-eight million, six hundred thirteen thousand, seven hundred fifteen".