28760715 has 48 divisors (see below), whose sum is σ = 52565760. Its totient is φ = 14526720.

The previous prime is 28760687. The next prime is 28760717. The reversal of 28760715 is 51706782.

It is not a de Polignac number, because 28760715 - 2⁹ = 28760203 is a prime.

It is a super-2 number, since 2×28760715² = 1654357454622450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28760715.

It is not an unprimeable number, because it can be changed into a prime (28760717) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 73741 + ... + 74129.

It is an arithmetic number, because the mean of its divisors is an integer number (1095120).

Almost surely, 2^28760715 is an apocalyptic number.

28760715 is a deficient number, since it is larger than the sum of its proper divisors (23805045).

28760715 is a wasteful number, since it uses less digits than its factorization.

28760715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484 (or 481 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 28760715 is about 5362.9017332038. The cubic root of 28760715 is about 306.3843370104.

The spelling of 28760715 in words is "twenty-eight million, seven hundred sixty thousand, seven hundred fifteen".