28078575315 has 32 divisors (see below), whose sum is σ = 53114158080. Its totient is φ = 12393300864.

The previous prime is 28078575247. The next prime is 28078575347. The reversal of 28078575315 is 51357587082.

It is not a de Polignac number, because 28078575315 - 2³⁴ = 10898706131 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4607559 + ... + 4613648.

It is an arithmetic number, because the mean of its divisors is an integer number (1659817440).

Almost surely, 2^28078575315 is an apocalyptic number.

28078575315 is a deficient number, since it is larger than the sum of its proper divisors (25035582765).

28078575315 is a wasteful number, since it uses less digits than its factorization.

28078575315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9221251.

The product of its (nonzero) digits is 2352000, while the sum is 51.

The spelling of 28078575315 in words is "twenty-eight billion, seventy-eight million, five hundred seventy-five thousand, three hundred fifteen".