2723256840 has 64 divisors (see below), whose sum is σ = 8188128000. Its totient is φ = 724570112.

The previous prime is 2723256829. The next prime is 2723256853. The reversal of 2723256840 is 486523272.

It is a super-2 number, since 2×2723256840² = 14832255633213571200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28609 + ... + 79151.

It is an arithmetic number, because the mean of its divisors is an integer number (127939500).

Almost surely, 2^2723256840 is an apocalyptic number.

2723256840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2723256840 is an abundant number, since it is smaller than the sum of its proper divisors (5464871160).

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

2723256840 is a wasteful number, since it uses less digits than its factorization.

2723256840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51006 (or 51002 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 39.

The square root of 2723256840 is about 52184.8334288805. The cubic root of 2723256840 is about 1396.4633248877.

The spelling of 2723256840 in words is "two billion, seven hundred twenty-three million, two hundred fifty-six thousand, eight hundred forty".