2857260140 has 24 divisors (see below), whose sum is σ = 6857424672. Its totient is φ = 979632000.

The previous prime is 2857260121. The next prime is 2857260179. The reversal of 2857260140 is 410627582.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 2857260140.

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, 10204361 + ... + 10204640.

It is an arithmetic number, because the mean of its divisors is an integer number (285726028).

Almost surely, 2^2857260140 is an apocalyptic number.

2857260140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2857260140 is an abundant number, since it is smaller than the sum of its proper divisors (4000164532).

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

2857260140 is a wasteful number, since it uses less digits than its factorization.

2857260140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20409017 (or 20409015 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 2857260140 is about 53453.3454518985. The cubic root of 2857260140 is about 1419.0028276547.

The spelling of 2857260140 in words is "two billion, eight hundred fifty-seven million, two hundred sixty thousand, one hundred forty".