3428645 has 32 divisors (see below), whose sum is σ = 5028480. Its totient is φ = 2211840.

The previous prime is 3428617. The next prime is 3428651. The reversal of 3428645 is 5468243.

It is not a de Polignac number, because 3428645 - 2⁸ = 3428389 is a prime.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17669 + ... + 17861.

It is an arithmetic number, because the mean of its divisors is an integer number (157140).

Almost surely, 2^3428645 is an apocalyptic number.

It is an amenable number.

3428645 is a deficient number, since it is larger than the sum of its proper divisors (1599835).

3428645 is a wasteful number, since it uses less digits than its factorization.

3428645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245.

The product of its digits is 23040, while the sum is 32.

The square root of 3428645 is about 1851.6600659948. The cubic root of 3428645 is about 150.7905667818.

The spelling of 3428645 in words is "three million, four hundred twenty-eight thousand, six hundred forty-five".