2815742872 has 16 divisors (see below), whose sum is σ = 5379132240. Its totient is φ = 1381307616.

The previous prime is 2815742857. The next prime is 2815742873. The reversal of 2815742872 is 2782475182.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2815742873) 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 3 ways as a sum of consecutive naturals, for example, 3320028 + ... + 3320875.

It is an arithmetic number, because the mean of its divisors is an integer number (336195765).

Almost surely, 2^2815742872 is an apocalyptic number.

It is an amenable number.

2815742872 is a deficient number, since it is larger than the sum of its proper divisors (2563389368).

2815742872 is a wasteful number, since it uses less digits than its factorization.

2815742872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6640962 (or 6640958 counting only the distinct ones).

The product of its digits is 501760, while the sum is 46.

The square root of 2815742872 is about 53063.5738713479. The cubic root of 2815742872 is about 1412.0963521684.

The spelling of 2815742872 in words is "two billion, eight hundred fifteen million, seven hundred forty-two thousand, eight hundred seventy-two".