2722128720 has 40 divisors (see below), whose sum is σ = 8438599776. Its totient is φ = 725900928.

The previous prime is 2722128713. The next prime is 2722128743. The reversal of 2722128720 is 278212272.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5670862 + ... + 5671341.

Almost surely, 2^2722128720 is an apocalyptic number.

2722128720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2722128720 is an abundant number, since it is smaller than the sum of its proper divisors (5716471056).

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

2722128720 is a wasteful number, since it uses less digits than its factorization.

2722128720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11342219 (or 11342213 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 2722128720 is about 52174.0234216224. The cubic root of 2722128720 is about 1396.2704680886.

The spelling of 2722128720 in words is "two billion, seven hundred twenty-two million, one hundred twenty-eight thousand, seven hundred twenty".