2878786512 has 120 divisors (see below), whose sum is σ = 9226314240. Its totient is φ = 820834560.

The previous prime is 2878786507. The next prime is 2878786541. The reversal of 2878786512 is 2156878782.

It is a super-2 number, since 2×2878786512² = 16574823563346252288, which contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 542689 + ... + 547967.

It is an arithmetic number, because the mean of its divisors is an integer number (76885952).

Almost surely, 2^2878786512 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 2878786512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4613157120).

2878786512 is an abundant number, since it is smaller than the sum of its proper divisors (6347527728).

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

2878786512 is a wasteful number, since it uses less digits than its factorization.

2878786512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5841 (or 5832 counting only the distinct ones).

The product of its digits is 3010560, while the sum is 54.

The square root of 2878786512 is about 53654.3242618896. The cubic root of 2878786512 is about 1422.5574674580.

The spelling of 2878786512 in words is "two billion, eight hundred seventy-eight million, seven hundred eighty-six thousand, five hundred twelve".