28877639024 has 60 divisors (see below), whose sum is σ = 62404063176. Its totient is φ = 12868472064.

The previous prime is 28877639023. The next prime is 28877639051. The reversal of 28877639024 is 42093677882.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28877639023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 92387 + ... + 257469.

Almost surely, 2^28877639024 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 28877639024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31202031588).

28877639024 is an abundant number, since it is smaller than the sum of its proper divisors (33526424152).

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

28877639024 is a wasteful number, since it uses less digits than its factorization.

28877639024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165162 (or 165127 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 56.

The spelling of 28877639024 in words is "twenty-eight billion, eight hundred seventy-seven million, six hundred thirty-nine thousand, twenty-four".