28621277632 has 112 divisors (see below), whose sum is σ = 59727144960. Its totient is φ = 13590305792.

The previous prime is 28621277617. The next prime is 28621277669. The reversal of 28621277632 is 23677212682.

It is a congruent number.

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, 33164433 + ... + 33165295.

It is an arithmetic number, because the mean of its divisors is an integer number (533278080).

Almost surely, 2^28621277632 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 28621277632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29863572480).

28621277632 is an abundant number, since it is smaller than the sum of its proper divisors (31105867328).

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

28621277632 is a wasteful number, since it uses less digits than its factorization.

28621277632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178 (or 1168 counting only the distinct ones).

The product of its digits is 677376, while the sum is 46.

The spelling of 28621277632 in words is "twenty-eight billion, six hundred twenty-one million, two hundred seventy-seven thousand, six hundred thirty-two".