2628439 has 4 divisors (see below), whose sum is σ = 2867400. Its totient is φ = 2389480.

The previous prime is 2628407. The next prime is 2628481. The reversal of 2628439 is 9348262.

2628439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2628439 - 2⁵ = 2628407 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 (2628499) 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 3 ways as a sum of consecutive naturals, for example, 119464 + ... + 119485.

It is an arithmetic number, because the mean of its divisors is an integer number (716850).

2^2628439 is an apocalyptic number.

2628439 is a deficient number, since it is larger than the sum of its proper divisors (238961).

2628439 is a wasteful number, since it uses less digits than its factorization.

2628439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238960.

The product of its digits is 20736, while the sum is 34.

The square root of 2628439 is about 1621.2461256700. The cubic root of 2628439 is about 138.0064234215.

The spelling of 2628439 in words is "two million, six hundred twenty-eight thousand, four hundred thirty-nine".