28459595136 has 384 divisors, whose sum is σ = 91892828160. Its totient is φ = 7772405760.

The previous prime is 28459595119. The next prime is 28459595137. The reversal of 28459595136 is 63159595482.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (384).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28459595137) 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, 56579461 + ... + 56579963.

It is an arithmetic number, because the mean of its divisors is an integer number (239304240).

Almost surely, 2^28459595136 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 28459595136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45946414080).

28459595136 is an abundant number, since it is smaller than the sum of its proper divisors (63433233024).

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

28459595136 is a wasteful number, since it uses less digits than its factorization.

28459595136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662 (or 643 counting only the distinct ones).

The product of its digits is 11664000, while the sum is 57.

The spelling of 28459595136 in words is "twenty-eight billion, four hundred fifty-nine million, five hundred ninety-five thousand, one hundred thirty-six".