28572370888 has 8 divisors (see below), whose sum is σ = 53573195430. Its totient is φ = 14286185440.

The previous prime is 28572370837. The next prime is 28572370919. The reversal of 28572370888 is 88807327582.

It can be written as a sum of positive squares in only one way, i.e., 24630791364 + 3941579524 = 156942^2 + 62782^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×28572370888² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1785773173 + ... + 1785773188.

Almost surely, 2^28572370888 is an apocalyptic number.

It is an amenable number.

28572370888 is a deficient number, since it is larger than the sum of its proper divisors (25000824542).

28572370888 is a wasteful number, since it uses less digits than its factorization.

28572370888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3571546367 (or 3571546363 counting only the distinct ones).

The product of its (nonzero) digits is 12042240, while the sum is 58.

The spelling of 28572370888 in words is "twenty-eight billion, five hundred seventy-two million, three hundred seventy thousand, eight hundred eighty-eight".