2857297992 has 32 divisors (see below), whose sum is σ = 7156481280. Its totient is φ = 950667840.

The previous prime is 2857297939. The next prime is 2857298063. The reversal of 2857297992 is 2997927582.

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, 97048 + ... + 123015.

It is an arithmetic number, because the mean of its divisors is an integer number (223640040).

Almost surely, 2^2857297992 is an apocalyptic number.

It is an amenable number.

2857297992 is an abundant number, since it is smaller than the sum of its proper divisors (4299183288).

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

2857297992 is a wasteful number, since it uses less digits than its factorization.

2857297992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220613 (or 220609 counting only the distinct ones).

The product of its digits is 11430720, while the sum is 60.

The square root of 2857297992 is about 53453.6995164975. The cubic root of 2857297992 is about 1419.0090937809.

The spelling of 2857297992 in words is "two billion, eight hundred fifty-seven million, two hundred ninety-seven thousand, nine hundred ninety-two".