28511076720 has 160 divisors (see below), whose sum is σ = 106952583168. Its totient is φ = 6133469184.

The previous prime is 28511076641. The next prime is 28511076721. The reversal of 28511076720 is 2767011582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28511076721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 470584 + ... + 527703.

Almost surely, 2^28511076720 is an apocalyptic number.

28511076720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28511076720 is an abundant number, since it is smaller than the sum of its proper divisors (78441506448).

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

28511076720 is a wasteful number, since it uses less digits than its factorization.

28511076720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998327 (or 998321 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 39.

The spelling of 28511076720 in words is "twenty-eight billion, five hundred eleven million, seventy-six thousand, seven hundred twenty".