2721607856 has 40 divisors (see below), whose sum is σ = 5755472400. Its totient is φ = 1236453120.

The previous prime is 2721607849. The next prime is 2721607859. The reversal of 2721607856 is 6587061272.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (2721607859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 565910 + ... + 570698.

It is an arithmetic number, because the mean of its divisors is an integer number (143886810).

Almost surely, 2^2721607856 is an apocalyptic number.

It is an amenable number.

2721607856 is an abundant number, since it is smaller than the sum of its proper divisors (3033864544).

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

2721607856 is a wasteful number, since it uses less digits than its factorization.

2721607856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8037 (or 8031 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 2721607856 is about 52169.0315800476. The cubic root of 2721607856 is about 1396.1814062443.

The spelling of 2721607856 in words is "two billion, seven hundred twenty-one million, six hundred seven thousand, eight hundred fifty-six".