28837531512 has 192 divisors, whose sum is σ = 82083456000. Its totient is φ = 9135244800.

The previous prime is 28837531493. The next prime is 28837531517. The reversal of 28837531512 is 21513573882.

28837531512 is a `hidden beast` number, since 2 + 8 + 83 + 7 + 53 + 1 + 512 = 666.

It is a super-2 number, since 2×28837531512² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28837531517) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35557587 + ... + 35558397.

It is an arithmetic number, because the mean of its divisors is an integer number (427518000).

Almost surely, 2^28837531512 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 28837531512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41041728000).

28837531512 is an abundant number, since it is smaller than the sum of its proper divisors (53245924488).

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

28837531512 is a wasteful number, since it uses less digits than its factorization.

28837531512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122 (or 1115 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The spelling of 28837531512 in words is "twenty-eight billion, eight hundred thirty-seven million, five hundred thirty-one thousand, five hundred twelve".