2834781 has 16 divisors (see below), whose sum is σ = 4079040. Its totient is φ = 1745280.

The previous prime is 2834759. The next prime is 2834789. The reversal of 2834781 is 1874382.

2834781 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 2834781 - 2⁵ = 2834749 is a prime.

It is a super-2 number, since 2×2834781² = 16071966635922, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2¹⁹ + 8⁵ + 3¹¹ + 4⁵ + 7⁴ + 8⁷ + 1 .

2834781 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2834789) 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, 1731 + ... + 2943.

It is an arithmetic number, because the mean of its divisors is an integer number (254940).

2^2834781 is an apocalyptic number.

It is an amenable number.

2834781 is a deficient number, since it is larger than the sum of its proper divisors (1244259).

2834781 is a wasteful number, since it uses less digits than its factorization.

2834781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276.

The product of its digits is 10752, while the sum is 33.

The square root of 2834781 is about 1683.6807892234. The cubic root of 2834781 is about 141.5271749595.

The spelling of 2834781 in words is "two million, eight hundred thirty-four thousand, seven hundred eighty-one".