28572670238 has 64 divisors (see below), whose sum is σ = 50521356288. Its totient is φ = 11866410240.

The previous prime is 28572670211. The next prime is 28572670241. The reversal of 28572670238 is 83207627582.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

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, 34801868 + ... + 34802688.

It is an arithmetic number, because the mean of its divisors is an integer number (789396192).

Almost surely, 2^28572670238 is an apocalyptic number.

28572670238 is a deficient number, since it is larger than the sum of its proper divisors (21948686050).

28572670238 is a wasteful number, since it uses less digits than its factorization.

28572670238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337.

The product of its (nonzero) digits is 2257920, while the sum is 50.

The spelling of 28572670238 in words is "twenty-eight billion, five hundred seventy-two million, six hundred seventy thousand, two hundred thirty-eight".