2741781 has 16 divisors (see below), whose sum is σ = 4212864. Its totient is φ = 1553664.

The previous prime is 2741779. The next prime is 2741797. The reversal of 2741781 is 1871472.

2741781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2741781 - 2¹ = 2741779 is a prime.

It is a super-2 number, since 2×2741781² = 15034726103922, which contains 22 as substring.

It is an Ulam number.

2741781 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2741731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2401 + ... + 3353.

It is an arithmetic number, because the mean of its divisors is an integer number (263304).

2^2741781 is an apocalyptic number.

2741781 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2741781 is a deficient number, since it is larger than the sum of its proper divisors (1471083).

2741781 is a wasteful number, since it uses less digits than its factorization.

2741781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100.

The product of its digits is 3136, while the sum is 30.

The square root of 2741781 is about 1655.8324190570. The cubic root of 2741781 is about 139.9622517276.

The spelling of 2741781 in words is "two million, seven hundred forty-one thousand, seven hundred eighty-one".