2812447872 has 256 divisors, whose sum is σ = 9099216000. Its totient is φ = 849899520.

The previous prime is 2812447871. The next prime is 2812447879. The reversal of 2812447872 is 2787442182.

It is not an unprimeable number, because it can be changed into a prime (2812447871) 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, 2650222 + ... + 2651282.

Almost surely, 2^2812447872 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 2812447872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4549608000).

2812447872 is an abundant number, since it is smaller than the sum of its proper divisors (6286768128).

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

2812447872 is a wasteful number, since it uses less digits than its factorization.

2812447872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156 (or 1138 counting only the distinct ones).

The product of its digits is 401408, while the sum is 45.

The square root of 2812447872 is about 53032.5171192166. The cubic root of 2812447872 is about 1411.5453224986.

The spelling of 2812447872 in words is "two billion, eight hundred twelve million, four hundred forty-seven thousand, eight hundred seventy-two".