28251157385752 has 128 divisors (see below), whose sum is σ = 63965205964800. Its totient is φ = 11440151106048.

The previous prime is 28251157385743. The next prime is 28251157385791. The reversal of 28251157385752 is 25758375115282.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1050488818 + ... + 1050515710.

It is an arithmetic number, because the mean of its divisors is an integer number (499728171600).

Almost surely, 2^{28251157385752} 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 28251157385752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31982602982400).

28251157385752 is an abundant number, since it is smaller than the sum of its proper divisors (35714048579048).

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

28251157385752 is a wasteful number, since it uses less digits than its factorization.

28251157385752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40745 (or 40741 counting only the distinct ones).

The product of its digits is 47040000, while the sum is 61.

The spelling of 28251157385752 in words is "twenty-eight trillion, two hundred fifty-one billion, one hundred fifty-seven million, three hundred eighty-five thousand, seven hundred fifty-two".