2891434 has 16 divisors (see below), whose sum is σ = 5338368. Its totient is φ = 1143792.

The previous prime is 2891431. The next prime is 2891453. The reversal of 2891434 is 4341982.

2891434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2891396 and 2891405.

It is not an unprimeable number, because it can be changed into a prime (2891431) 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 7 ways as a sum of consecutive naturals, for example, 7762 + ... + 8125.

It is an arithmetic number, because the mean of its divisors is an integer number (333648).

2^2891434 is an apocalyptic number.

2891434 is a deficient number, since it is larger than the sum of its proper divisors (2446934).

2891434 is a wasteful number, since it uses less digits than its factorization.

2891434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15909.

The product of its digits is 6912, while the sum is 31.

The square root of 2891434 is about 1700.4217123996. The cubic root of 2891434 is about 142.4637683612.

The spelling of 2891434 in words is "two million, eight hundred ninety-one thousand, four hundred thirty-four".