28791337344 has 256 divisors, whose sum is σ = 98638732800. Its totient is φ = 7220183040.

The previous prime is 28791337321. The next prime is 28791337363. The reversal of 28791337344 is 44373319782.

It is a super-2 number, since 2×28791337344² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 840684 + ... + 874260.

It is an arithmetic number, because the mean of its divisors is an integer number (385307550).

Almost surely, 2^28791337344 is an apocalyptic number.

28791337344 is a gapful number since it is divisible by the number (24) 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 28791337344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49319366400).

28791337344 is an abundant number, since it is smaller than the sum of its proper divisors (69847395456).

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

28791337344 is a wasteful number, since it uses less digits than its factorization.

28791337344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33641 (or 33629 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 51.

The spelling of 28791337344 in words is "twenty-eight billion, seven hundred ninety-one million, three hundred thirty-seven thousand, three hundred forty-four".