2731390656 has 112 divisors (see below), whose sum is σ = 7583228928. Its totient is φ = 866534400.

The previous prime is 2731390621. The next prime is 2731390667. The reversal of 2731390656 is 6560931372.

It is a super-2 number, since 2×2731390656² = 14920989831368220672, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 359311 + ... + 366833.

Almost surely, 2^2731390656 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 2731390656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3791614464).

2731390656 is an abundant number, since it is smaller than the sum of its proper divisors (4851838272).

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

2731390656 is a wasteful number, since it uses less digits than its factorization.

2731390656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7630 (or 7620 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 42.

The square root of 2731390656 is about 52262.7080813844. The cubic root of 2731390656 is about 1397.8522605802.

The spelling of 2731390656 in words is "two billion, seven hundred thirty-one million, three hundred ninety thousand, six hundred fifty-six".