28002800528 has 20 divisors (see below), whose sum is σ = 54258385500. Its totient is φ = 14000636544.

The previous prime is 28002800509. The next prime is 28002800561. The reversal of 28002800528 is 82500820082.

It can be written as a sum of positive squares in 2 ways, for example, as 22634600704 + 5368199824 = 150448^2 + 73268^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360626 + ... + 431342.

It is an arithmetic number, because the mean of its divisors is an integer number (2712919275).

Almost surely, 2^28002800528 is an apocalyptic number.

It is an amenable number.

28002800528 is a deficient number, since it is larger than the sum of its proper divisors (26255584972).

28002800528 is a wasteful number, since it uses less digits than its factorization.

28002800528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95474 (or 95468 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 35.

The spelling of 28002800528 in words is "twenty-eight billion, two million, eight hundred thousand, five hundred twenty-eight".