2857380886 has 16 divisors (see below), whose sum is σ = 4419777024. Its totient is φ = 1384712424.

The previous prime is 2857380881. The next prime is 2857380899. The reversal of 2857380886 is 6880837582.

It is a happy number.

It is a super-4 number, since 4×2857380886⁴ (a number of 39 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2857380881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137880 + ... + 157243.

It is an arithmetic number, because the mean of its divisors is an integer number (276236064).

Almost surely, 2^2857380886 is an apocalyptic number.

2857380886 is a deficient number, since it is larger than the sum of its proper divisors (1562396138).

2857380886 is a wasteful number, since it uses less digits than its factorization.

2857380886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295275.

The product of its (nonzero) digits is 5160960, while the sum is 55.

The square root of 2857380886 is about 53454.4748921921. The cubic root of 2857380886 is about 1419.0228160928.

The spelling of 2857380886 in words is "two billion, eight hundred fifty-seven million, three hundred eighty thousand, eight hundred eighty-six".