2742779 has 12 divisors (see below), whose sum is σ = 3062304. Its totient is φ = 2440944.

The previous prime is 2742769. The next prime is 2742781. The reversal of 2742779 is 9772472.

2742779 is nontrivially palindromic in base 12.

It is a de Polignac number, because none of the positive numbers 2^k-2742779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2742739) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40904 + ... + 40970.

It is an arithmetic number, because the mean of its divisors is an integer number (255192).

2^2742779 is an apocalyptic number.

2742779 is a deficient number, since it is larger than the sum of its proper divisors (319525).

2742779 is an equidigital number, since it uses as much as digits as its factorization.

2742779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194 (or 127 counting only the distinct ones).

The product of its digits is 49392, while the sum is 38.

The square root of 2742779 is about 1656.1337506373. The cubic root of 2742779 is about 139.9792316131.

The spelling of 2742779 in words is "two million, seven hundred forty-two thousand, seven hundred seventy-nine".