28982221572 has 24 divisors (see below), whose sum is σ = 67968464256. Its totient is φ = 9611700448.

The previous prime is 28982221559. The next prime is 28982221601. The reversal of 28982221572 is 27512228982.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6127548 + ... + 6132275.

It is an arithmetic number, because the mean of its divisors is an integer number (2832019344).

Almost surely, 2^28982221572 is an apocalyptic number.

It is an amenable number.

28982221572 is an abundant number, since it is smaller than the sum of its proper divisors (38986242684).

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

28982221572 is a wasteful number, since it uses less digits than its factorization.

28982221572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12260027 (or 12260025 counting only the distinct ones).

The product of its digits is 645120, while the sum is 48.

The spelling of 28982221572 in words is "twenty-eight billion, nine hundred eighty-two million, two hundred twenty-one thousand, five hundred seventy-two".