28475887504 has 15 divisors (see below), whose sum is σ = 55173339867. Its totient is φ = 14237606256.

The previous prime is 28475887493. The next prime is 28475887607. The reversal of 28475887504 is 40578857482.

It is a happy number.

The square root of 28475887504 is 168748.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 653899 + ... + 696085.

Almost surely, 2^28475887504 is an apocalyptic number.

28475887504 is the 168748-th square number.

It is an amenable number.

28475887504 is a deficient number, since it is larger than the sum of its proper divisors (26697452363).

28475887504 is an frugal number, since it uses more digits than its factorization.

28475887504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84382 (or 42189 counting only the distinct ones).

The product of its (nonzero) digits is 20070400, while the sum is 58.

The spelling of 28475887504 in words is "twenty-eight billion, four hundred seventy-five million, eight hundred eighty-seven thousand, five hundred four".