2720027321 has 16 divisors (see below), whose sum is σ = 2995574400. Its totient is φ = 2449307520.

The previous prime is 2720027293. The next prime is 2720027329. The reversal of 2720027321 is 1237200272.

It is a de Polignac number, because none of the positive numbers 2^k-2720027321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2720027329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 507371 + ... + 512703.

It is an arithmetic number, because the mean of its divisors is an integer number (187223400).

Almost surely, 2^2720027321 is an apocalyptic number.

It is an amenable number.

2720027321 is a deficient number, since it is larger than the sum of its proper divisors (275547079).

2720027321 is a wasteful number, since it uses less digits than its factorization.

2720027321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5776.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 2720027321 is about 52153.8811690942. The cubic root of 2720027321 is about 1395.9110830866.

Adding to 2720027321 its reverse (1237200272), we get a palindrome (3957227593).

The spelling of 2720027321 in words is "two billion, seven hundred twenty million, twenty-seven thousand, three hundred twenty-one".