2782870216 has 128 divisors (see below), whose sum is σ = 6517082880. Its totient is φ = 1086898176.

The previous prime is 2782870213. The next prime is 2782870243. The reversal of 2782870216 is 6120782872.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (2782870213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6426736 + ... + 6427168.

It is an arithmetic number, because the mean of its divisors is an integer number (50914710).

Almost surely, 2^2782870216 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 2782870216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3258541440).

2782870216 is an abundant number, since it is smaller than the sum of its proper divisors (3734212664).

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

2782870216 is a wasteful number, since it uses less digits than its factorization.

2782870216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663 (or 659 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 43.

The square root of 2782870216 is about 52752.9166587024. The cubic root of 2782870216 is about 1406.5796101745.

The spelling of 2782870216 in words is "two billion, seven hundred eighty-two million, eight hundred seventy thousand, two hundred sixteen".