2797722872 has 64 divisors (see below), whose sum is σ = 6146772480. Its totient is φ = 1168981632.

The previous prime is 2797722869. The next prime is 2797722877. The reversal of 2797722872 is 2782277972.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2797722877) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 480893 + ... + 486675.

It is an arithmetic number, because the mean of its divisors is an integer number (96043320).

Almost surely, 2^2797722872 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 2797722872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3073386240).

2797722872 is an abundant number, since it is smaller than the sum of its proper divisors (3349049608).

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

2797722872 is a wasteful number, since it uses less digits than its factorization.

2797722872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6012 (or 6008 counting only the distinct ones).

The product of its digits is 2765952, while the sum is 53.

The square root of 2797722872 is about 52893.5050077039. The cubic root of 2797722872 is about 1409.0775570433.

Subtracting from 2797722872 its reverse (2782277972), we obtain a square (15444900 = 3930²).

The spelling of 2797722872 in words is "two billion, seven hundred ninety-seven million, seven hundred twenty-two thousand, eight hundred seventy-two".