2857142886 has 32 divisors (see below), whose sum is σ = 6320172768. Its totient is φ = 855360000.

The previous prime is 2857142867. The next prime is 2857142887. The reversal of 2857142886 is 6882417582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2857142887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 492115 + ... + 497886.

It is an arithmetic number, because the mean of its divisors is an integer number (197505399).

Almost surely, 2^2857142886 is an apocalyptic number.

2857142886 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2857142886 is an abundant number, since it is smaller than the sum of its proper divisors (3463029882).

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

2857142886 is a wasteful number, since it uses less digits than its factorization.

2857142886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990056.

The product of its digits is 1720320, while the sum is 51.

The square root of 2857142886 is about 53452.2486524187. The cubic root of 2857142886 is about 1418.9834167476.

The spelling of 2857142886 in words is "two billion, eight hundred fifty-seven million, one hundred forty-two thousand, eight hundred eighty-six".