28587199512 has 64 divisors (see below), whose sum is σ = 75330547200. Its totient is φ = 9015408000.

The previous prime is 28587199477. The next prime is 28587199517. The reversal of 28587199512 is 21599178582.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28587199517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300718 + ... + 384194.

It is an arithmetic number, because the mean of its divisors is an integer number (1177039800).

Almost surely, 2^28587199512 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 28587199512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37665273600).

28587199512 is an abundant number, since it is smaller than the sum of its proper divisors (46743347688).

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

28587199512 is a wasteful number, since it uses less digits than its factorization.

28587199512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84256 (or 84252 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 57.

The spelling of 28587199512 in words is "twenty-eight billion, five hundred eighty-seven million, one hundred ninety-nine thousand, five hundred twelve".