28613792988 has 216 divisors, whose sum is σ = 83917360800. Its totient is φ = 8198108160.

The previous prime is 28613792983. The next prime is 28613792989. The reversal of 28613792988 is 88929731682.

28613792988 is a `hidden beast` number, since 2 + 8 + 613 + 7 + 9 + 2 + 9 + 8 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28613792983) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 8915128 + ... + 8918336.

It is an arithmetic number, because the mean of its divisors is an integer number (388506300).

Almost surely, 2^28613792988 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 28613792988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41958680400).

28613792988 is an abundant number, since it is smaller than the sum of its proper divisors (55303567812).

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

28613792988 is a wasteful number, since it uses less digits than its factorization.

28613792988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3353 (or 3337 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 63.

The spelling of 28613792988 in words is "twenty-eight billion, six hundred thirteen million, seven hundred ninety-two thousand, nine hundred eighty-eight".