2428645 has 4 divisors (see below), whose sum is σ = 2914380. Its totient is φ = 1942912.

The previous prime is 2428627. The next prime is 2428649. The reversal of 2428645 is 5468242.

2428645 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 can be written as a sum of positive squares in 2 ways, for example, as 1790244 + 638401 = 1338^2 + 799^2 .

It is a cyclic number.

It is not a de Polignac number, because 2428645 - 2¹⁷ = 2297573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2428649) 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, 242860 + ... + 242869.

It is an arithmetic number, because the mean of its divisors is an integer number (728595).

2^2428645 is an apocalyptic number.

It is an amenable number.

2428645 is a deficient number, since it is larger than the sum of its proper divisors (485735).

2428645 is an equidigital number, since it uses as much as digits as its factorization.

2428645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485734.

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

The square root of 2428645 is about 1558.4110497555. The cubic root of 2428645 is about 134.4171488476.

The spelling of 2428645 in words is "two million, four hundred twenty-eight thousand, six hundred forty-five".