28815145130 has 16 divisors (see below), whose sum is σ = 51871210920. Its totient is φ = 11525180352.

The previous prime is 28815145127. The next prime is 28815145147. The reversal of 28815145130 is 3154151882.

It can be written as a sum of positive squares in 4 ways, for example, as 7505276689 + 21309868441 = 86633^2 + 145979^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37592 + ... + 242988.

Almost surely, 2^28815145130 is an apocalyptic number.

28815145130 is a deficient number, since it is larger than the sum of its proper divisors (23056065790).

28815145130 is a wasteful number, since it uses less digits than its factorization.

28815145130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219433.

The product of its (nonzero) digits is 38400, while the sum is 38.

The spelling of 28815145130 in words is "twenty-eight billion, eight hundred fifteen million, one hundred forty-five thousand, one hundred thirty".