28539597372 has 192 divisors, whose sum is σ = 81222801408. Its totient is φ = 7683840000.

The previous prime is 28539597367. The next prime is 28539597389. The reversal of 28539597372 is 27379593582.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4916872 + ... + 4922672.

It is an arithmetic number, because the mean of its divisors is an integer number (423035424).

Almost surely, 2^28539597372 is an apocalyptic number.

28539597372 is a gapful number since it is divisible by the number (22) 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 28539597372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40611400704).

28539597372 is an abundant number, since it is smaller than the sum of its proper divisors (52683204036).

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

28539597372 is a wasteful number, since it uses less digits than its factorization.

28539597372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5940 (or 5938 counting only the distinct ones).

The product of its digits is 28576800, while the sum is 60.

The spelling of 28539597372 in words is "twenty-eight billion, five hundred thirty-nine million, five hundred ninety-seven thousand, three hundred seventy-two".