2628445 has 8 divisors (see below), whose sum is σ = 3163320. Its totient is φ = 2096640.

The previous prime is 2628407. The next prime is 2628481. The reversal of 2628445 is 5448262.

2628445 is nontrivially palindromic in base 9.

2628445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 33124 + 2595321 = 182^2 + 1611^2 .

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

It is not a de Polignac number, because 2628445 - 2¹³ = 2620253 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 2101 + ... + 3109.

It is an arithmetic number, because the mean of its divisors is an integer number (395415).

2^2628445 is an apocalyptic number.

It is an amenable number.

2628445 is a deficient number, since it is larger than the sum of its proper divisors (534875).

2628445 is a wasteful number, since it uses less digits than its factorization.

2628445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1535.

The product of its digits is 15360, while the sum is 31.

The square root of 2628445 is about 1621.2479760974. The cubic root of 2628445 is about 138.0065284316.

The spelling of 2628445 in words is "two million, six hundred twenty-eight thousand, four hundred forty-five".