28857350533272 has 32 divisors (see below), whose sum is σ = 72143508729600. Its totient is φ = 9619099191584.

The previous prime is 28857350533241. The next prime is 28857350533283. The reversal of 28857350533272 is 27233505375882.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22938229 + ... + 24163547.

It is an arithmetic number, because the mean of its divisors is an integer number (2254484647800).

Almost surely, 2^{28857350533272} is an apocalyptic number.

It is an amenable number.

28857350533272 is an abundant number, since it is smaller than the sum of its proper divisors (43286158196328).

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

28857350533272 is a wasteful number, since it uses less digits than its factorization.

28857350533272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2206615 (or 2206611 counting only the distinct ones).

The product of its (nonzero) digits is 84672000, while the sum is 60.

The spelling of 28857350533272 in words is "twenty-eight trillion, eight hundred fifty-seven billion, three hundred fifty million, five hundred thirty-three thousand, two hundred seventy-two".