2782237656 has 32 divisors (see below), whose sum is σ = 7587921600. Its totient is φ = 843102240.

The previous prime is 2782237651. The next prime is 2782237657. The reversal of 2782237656 is 6567322872.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2782237651) 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 7 ways as a sum of consecutive naturals, for example, 5269126 + ... + 5269653.

It is an arithmetic number, because the mean of its divisors is an integer number (237122550).

Almost surely, 2^2782237656 is an apocalyptic number.

It is an amenable number.

2782237656 is an abundant number, since it is smaller than the sum of its proper divisors (4805683944).

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

2782237656 is a wasteful number, since it uses less digits than its factorization.

2782237656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10538799 (or 10538795 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 48.

The square root of 2782237656 is about 52746.9208200820. The cubic root of 2782237656 is about 1406.4730279588.

The spelling of 2782237656 in words is "two billion, seven hundred eighty-two million, two hundred thirty-seven thousand, six hundred fifty-six".