1628411 has 4 divisors (see below), whose sum is σ = 1650792. Its totient is φ = 1606032.

The previous prime is 1628401. The next prime is 1628441. The reversal of 1628411 is 1148261.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1628411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1628401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11081 + ... + 11226.

It is an arithmetic number, because the mean of its divisors is an integer number (412698).

2^1628411 is an apocalyptic number.

1628411 is a deficient number, since it is larger than the sum of its proper divisors (22381).

1628411 is an equidigital number, since it uses as much as digits as its factorization.

1628411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22380.

The product of its digits is 384, while the sum is 23.

The square root of 1628411 is about 1276.0920813170. The cubic root of 1628411 is about 117.6489374357.

The spelling of 1628411 in words is "one million, six hundred twenty-eight thousand, four hundred eleven".