2721082880 has 80 divisors (see below), whose sum is σ = 6565253904. Its totient is φ = 1081589760.

The previous prime is 2721082879. The next prime is 2721082921. The reversal of 2721082880 is 882801272.

It is a tau number, because it is divible by the number of its divisors (80).

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, 414020 + ... + 420540.

Almost surely, 2^2721082880 is an apocalyptic number.

2721082880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2721082880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3282626952).

2721082880 is an abundant number, since it is smaller than the sum of its proper divisors (3844171024).

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

2721082880 is an equidigital number, since it uses as much as digits as its factorization.

2721082880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6707 (or 6691 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 38.

The square root of 2721082880 is about 52163.9998466375. Note that the first 3 decimals coincide. The cubic root of 2721082880 is about 1396.0916297959.

The spelling of 2721082880 in words is "two billion, seven hundred twenty-one million, eighty-two thousand, eight hundred eighty".