2742831 has 48 divisors (see below), whose sum is σ = 5189184. Its totient is φ = 1354752.

The previous prime is 2742811. The next prime is 2742853. The reversal of 2742831 is 1382472.

It is not a de Polignac number, because 2742831 - 2⁵ = 2742799 is a prime.

It is a super-2 number, since 2×2742831² = 15046243789122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2742795 and 2742804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2742811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13825 + ... + 14021.

It is an arithmetic number, because the mean of its divisors is an integer number (108108).

2^2742831 is an apocalyptic number.

2742831 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2742831 is a deficient number, since it is larger than the sum of its proper divisors (2446353).

2742831 is a wasteful number, since it uses less digits than its factorization.

2742831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240 (or 237 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 2742831 is about 1656.1494497780. The cubic root of 2742831 is about 139.9801162237.

The spelling of 2742831 in words is "two million, seven hundred forty-two thousand, eight hundred thirty-one".