28511942976 has 420 divisors, whose sum is σ = 95931386496. Its totient is φ = 8295436800.

The previous prime is 28511942951. The next prime is 28511942981. The reversal of 28511942976 is 67924911582.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

Its product of digits (2177280) is a multiple of the sum of its prime factors (320).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 224503425 + ... + 224503551.

Almost surely, 2^28511942976 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 28511942976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47965693248).

28511942976 is an abundant number, since it is smaller than the sum of its proper divisors (67419443520).

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

28511942976 is a wasteful number, since it uses less digits than its factorization.

28511942976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320 (or 174 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The spelling of 28511942976 in words is "twenty-eight billion, five hundred eleven million, nine hundred forty-two thousand, nine hundred seventy-six".