2628385 has 4 divisors (see below), whose sum is σ = 3154068. Its totient is φ = 2102704.

The previous prime is 2628383. The next prime is 2628401. The reversal of 2628385 is 5838262.

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

It can be written as a sum of positive squares in 2 ways, for example, as 305809 + 2322576 = 553^2 + 1524^2 .

It is a cyclic number.

It is not a de Polignac number, because 2628385 - 2¹ = 2628383 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2628385.

It is not an unprimeable number, because it can be changed into a prime (2628383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262834 + ... + 262843.

It is an arithmetic number, because the mean of its divisors is an integer number (788517).

2^2628385 is an apocalyptic number.

It is an amenable number.

2628385 is a deficient number, since it is larger than the sum of its proper divisors (525683).

2628385 is an equidigital number, since it uses as much as digits as its factorization.

2628385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525682.

The product of its digits is 23040, while the sum is 34.

The square root of 2628385 is about 1621.2294717282. The cubic root of 2628385 is about 138.0054783234.

The spelling of 2628385 in words is "two million, six hundred twenty-eight thousand, three hundred eighty-five".