28157583216 has 320 divisors, whose sum is σ = 91524300800. Its totient is φ = 7278336000.

The previous prime is 28157583163. The next prime is 28157583217. The reversal of 28157583216 is 61238575182.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28157583217) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15633516 + ... + 15635316.

It is an arithmetic number, because the mean of its divisors is an integer number (286013440).

Almost surely, 2^28157583216 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 28157583216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45762150400).

28157583216 is an abundant number, since it is smaller than the sum of its proper divisors (63366717584).

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

28157583216 is a wasteful number, since it uses less digits than its factorization.

28157583216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1948 (or 1942 counting only the distinct ones).

The product of its digits is 806400, while the sum is 48.

The spelling of 28157583216 in words is "twenty-eight billion, one hundred fifty-seven million, five hundred eighty-three thousand, two hundred sixteen".