2721381904 has 20 divisors (see below), whose sum is σ = 5276715840. Its totient is φ = 1359648800.

The previous prime is 2721381877. The next prime is 2721381907. The reversal of 2721381904 is 4091831272.

It is not an unprimeable number, because it can be changed into a prime (2721381907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43372 + ... + 85579.

It is an arithmetic number, because the mean of its divisors is an integer number (263835792).

Almost surely, 2^2721381904 is an apocalyptic number.

It is an amenable number.

2721381904 is a deficient number, since it is larger than the sum of its proper divisors (2555333936).

2721381904 is a wasteful number, since it uses less digits than its factorization.

2721381904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130278 (or 130272 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 2721381904 is about 52166.8659591507. The cubic root of 2721381904 is about 1396.1427674778.

The spelling of 2721381904 in words is "two billion, seven hundred twenty-one million, three hundred eighty-one thousand, nine hundred four".