2828391 has 16 divisors (see below), whose sum is σ = 3932544. Its totient is φ = 1806624.

The previous prime is 2828389. The next prime is 2828429. The reversal of 2828391 is 1938282.

2828391 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 2828391 - 2¹ = 2828389 is a prime.

2828391 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2828311) 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, 9060 + ... + 9366.

It is an arithmetic number, because the mean of its divisors is an integer number (245784).

2^2828391 is an apocalyptic number.

2828391 is a deficient number, since it is larger than the sum of its proper divisors (1104153).

2828391 is a wasteful number, since it uses less digits than its factorization.

2828391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430.

The product of its digits is 6912, while the sum is 33.

The square root of 2828391 is about 1681.7820905218. The cubic root of 2828391 is about 141.4207541556.

The spelling of 2828391 in words is "two million, eight hundred twenty-eight thousand, three hundred ninety-one".