28568715 has 48 divisors (see below), whose sum is σ = 54369792. Its totient is φ = 12766656.

The previous prime is 28568713. The next prime is 28568717. The reversal of 28568715 is 51786582.

28568715 = T₁₀₇₉ + T₁₀₈₀ + ... + T₁₁₂₅.

It is an interprime number because it is at equal distance from previous prime (28568713) and next prime (28568717).

It is not a de Polignac number, because 28568715 - 2¹ = 28568713 is a prime.

Its product of digits (134400) is a multiple of the sum of its prime factors (896).

It is not an unprimeable number, because it can be changed into a prime (28568711) 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, 34132 + ... + 34958.

It is an arithmetic number, because the mean of its divisors is an integer number (1132704).

Almost surely, 2^28568715 is an apocalyptic number.

28568715 is a deficient number, since it is larger than the sum of its proper divisors (25801077).

28568715 is a wasteful number, since it uses less digits than its factorization.

28568715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896 (or 889 counting only the distinct ones).

The product of its digits is 134400, while the sum is 42.

The square root of 28568715 is about 5344.9710008568. The cubic root of 28568715 is about 305.7010301349.

It can be divided in two parts, 2856 and 8715, that multiplied together give a triangular number (24890040 = T₇₀₅₅).

The spelling of 28568715 in words is "twenty-eight million, five hundred sixty-eight thousand, seven hundred fifteen".