3628391 has 8 divisors (see below), whose sum is σ = 3958080. Its totient is φ = 3305952.

The previous prime is 3628363. The next prime is 3628397. The reversal of 3628391 is 1938263.

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

It is not a de Polignac number, because 3628391 - 2¹⁰ = 3627367 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 (3628397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 740 + ... + 2793.

It is an arithmetic number, because the mean of its divisors is an integer number (494760).

Almost surely, 2^3628391 is an apocalyptic number.

3628391 is a deficient number, since it is larger than the sum of its proper divisors (329689).

3628391 is a wasteful number, since it uses less digits than its factorization.

3628391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3625.

The product of its digits is 7776, while the sum is 32.

The square root of 3628391 is about 1904.8335885321. The cubic root of 3628391 is about 153.6637262474.

The spelling of 3628391 in words is "three million, six hundred twenty-eight thousand, three hundred ninety-one".