2856985992 has 224 divisors, whose sum is σ = 9380563200. Its totient is φ = 798377472.

The previous prime is 2856985973. The next prime is 2856986021. The reversal of 2856985992 is 2995896582.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 1917984 + ... + 1919472.

Almost surely, 2^2856985992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2856985992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4690281600).

2856985992 is an abundant number, since it is smaller than the sum of its proper divisors (6523577208).

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

2856985992 is a wasteful number, since it uses less digits than its factorization.

2856985992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1567 (or 1548 counting only the distinct ones).

The product of its digits is 27993600, while the sum is 63.

The square root of 2856985992 is about 53450.7810232928. The cubic root of 2856985992 is about 1418.9574427743.

The spelling of 2856985992 in words is "two billion, eight hundred fifty-six million, nine hundred eighty-five thousand, nine hundred ninety-two".