28759315 has 16 divisors (see below), whose sum is σ = 38783808. Its totient is φ = 20313216.

The previous prime is 28759273. The next prime is 28759321. The reversal of 28759315 is 51395782.

It is a cyclic number.

It is not a de Polignac number, because 28759315 - 2⁹ = 28758803 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8124 + ... + 11113.

It is an arithmetic number, because the mean of its divisors is an integer number (2423988).

Almost surely, 2^28759315 is an apocalyptic number.

28759315 is a deficient number, since it is larger than the sum of its proper divisors (10024493).

28759315 is a wasteful number, since it uses less digits than its factorization.

28759315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19278.

The product of its digits is 75600, while the sum is 40.

The square root of 28759315 is about 5362.7712052632. The cubic root of 28759315 is about 306.3793655875.

It can be divided in two parts, 2875 and 9315, that multiplied together give a square (26780625 = 5175²).

The spelling of 28759315 in words is "twenty-eight million, seven hundred fifty-nine thousand, three hundred fifteen".