28115744760 has 320 divisors, whose sum is σ = 102910500000. Its totient is φ = 6857561088.

The previous prime is 28115744743. The next prime is 28115744819. The reversal of 28115744760 is 6744751182.

28115744760 is a `hidden beast` number, since 2 + 8 + 1 + 1 + 574 + 4 + 76 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1777366 + ... + 1793114.

Almost surely, 2^28115744760 is an apocalyptic number.

28115744760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28115744760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51455250000).

28115744760 is an abundant number, since it is smaller than the sum of its proper divisors (74794755240).

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

28115744760 is a wasteful number, since it uses less digits than its factorization.

28115744760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15820 (or 15807 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The spelling of 28115744760 in words is "twenty-eight billion, one hundred fifteen million, seven hundred forty-four thousand, seven hundred sixty".