28831817672 has 64 divisors (see below), whose sum is σ = 65185411200. Its totient is φ = 11678929920.

The previous prime is 28831817659. The next prime is 28831817683. The reversal of 28831817672 is 27671813882.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 429422 + ... + 492002.

It is an arithmetic number, because the mean of its divisors is an integer number (1018522050).

Almost surely, 2^28831817672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28831817672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32592705600).

28831817672 is an abundant number, since it is smaller than the sum of its proper divisors (36353593528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28831817672 is a wasteful number, since it uses less digits than its factorization.

28831817672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63046 (or 63042 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 53.

The spelling of 28831817672 in words is "twenty-eight billion, eight hundred thirty-one million, eight hundred seventeen thousand, six hundred seventy-two".