2721330906 has 16 divisors (see below), whose sum is σ = 6220185024. Its totient is φ = 777523104.

The previous prime is 2721330901. The next prime is 2721330907. The reversal of 2721330906 is 6090331272.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2721330901) 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, 32396755 + ... + 32396838.

It is an arithmetic number, because the mean of its divisors is an integer number (388761564).

Almost surely, 2^2721330906 is an apocalyptic number.

2721330906 is an abundant number, since it is smaller than the sum of its proper divisors (3498854118).

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

2721330906 is a wasteful number, since it uses less digits than its factorization.

2721330906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64793605.

The product of its (nonzero) digits is 13608, while the sum is 33.

The square root of 2721330906 is about 52166.3771600060. The cubic root of 2721330906 is about 1396.1340463040.

The spelling of 2721330906 in words is "two billion, seven hundred twenty-one million, three hundred thirty thousand, nine hundred six".