28534125312 has 1296 divisors, whose sum is σ = 116030783232. Its totient is φ = 6897623040.

The previous prime is 28534125307. The next prime is 28534125313. The reversal of 28534125312 is 21352143582.

28534125312 is a `hidden beast` number, since 2 + 85 + 3 + 41 + 2 + 531 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (1296).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (28534125313) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 771192558 + ... + 771192594.

Almost surely, 2^28534125312 is an apocalyptic number.

28534125312 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 28534125312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58015391616).

28534125312 is an abundant number, since it is smaller than the sum of its proper divisors (87496657920).

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

28534125312 is a wasteful number, since it uses less digits than its factorization.

28534125312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 83 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

Adding to 28534125312 its reverse (21352143582), we get a palindrome (49886268894).

The spelling of 28534125312 in words is "twenty-eight billion, five hundred thirty-four million, one hundred twenty-five thousand, three hundred twelve".