2857778892 has 72 divisors (see below), whose sum is σ = 7307629056. Its totient is φ = 941601024.

The previous prime is 2857778881. The next prime is 2857778909. The reversal of 2857778892 is 2988777582.

It is a super-3 number, since 3×2857778892³ (a number of 29 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1430038 + ... + 1432034.

It is an arithmetic number, because the mean of its divisors is an integer number (101494848).

Almost surely, 2^2857778892 is an apocalyptic number.

It is an amenable number.

2857778892 is an abundant number, since it is smaller than the sum of its proper divisors (4449850164).

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

2857778892 is a wasteful number, since it uses less digits than its factorization.

2857778892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2447 (or 2442 counting only the distinct ones).

The product of its digits is 31610880, while the sum is 63.

The square root of 2857778892 is about 53458.1976127142. The cubic root of 2857778892 is about 1419.0886984978.

The spelling of 2857778892 in words is "two billion, eight hundred fifty-seven million, seven hundred seventy-eight thousand, eight hundred ninety-two".