2720279 has 4 divisors (see below), whose sum is σ = 2838576. Its totient is φ = 2601984.

The previous prime is 2720273. The next prime is 2720297. The reversal of 2720279 is 9720272.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2720279 is a prime.

It is a pancake number, because a pancake can be divided into 2720279 parts by 2332 straight cuts.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2720273) 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, 59114 + ... + 59159.

It is an arithmetic number, because the mean of its divisors is an integer number (709644).

2^2720279 is an apocalyptic number.

2720279 is a deficient number, since it is larger than the sum of its proper divisors (118297).

2720279 is a wasteful number, since it uses less digits than its factorization.

2720279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118296.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 2720279 is about 1649.3268323774. The cubic root of 2720279 is about 139.5954135432.

The spelling of 2720279 in words is "two million, seven hundred twenty thousand, two hundred seventy-nine".