28356057352 has 48 divisors (see below), whose sum is σ = 62025547500. Its totient is φ = 12117716352.

The previous prime is 28356057347. The next prime is 28356057371. The reversal of 28356057352 is 25375065382.

It can be written as a sum of positive squares in 2 ways, for example, as 27009607716 + 1346449636 = 164346^2 + 36694^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33174 + ... + 240442.

Almost surely, 2^28356057352 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 28356057352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31012773750).

28356057352 is an abundant number, since it is smaller than the sum of its proper divisors (33669490148).

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

28356057352 is a wasteful number, since it uses less digits than its factorization.

28356057352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207638 (or 207627 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 46.

The spelling of 28356057352 in words is "twenty-eight billion, three hundred fifty-six million, fifty-seven thousand, three hundred fifty-two".