2828639 has 8 divisors (see below), whose sum is σ = 3109968. Its totient is φ = 2551360.

The previous prime is 2828633. The next prime is 2828641. The reversal of 2828639 is 9368282.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2828639 - 2⁸ = 2828383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2828633) 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 7 ways as a sum of consecutive naturals, for example, 569 + ... + 2445.

It is an arithmetic number, because the mean of its divisors is an integer number (388746).

2^2828639 is an apocalyptic number.

2828639 is a deficient number, since it is larger than the sum of its proper divisors (281329).

2828639 is a wasteful number, since it uses less digits than its factorization.

2828639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2025.

The product of its digits is 41472, while the sum is 38.

The square root of 2828639 is about 1681.8558202177. The cubic root of 2828639 is about 141.4248874034.

The spelling of 2828639 in words is "two million, eight hundred twenty-eight thousand, six hundred thirty-nine".