1628922 has 16 divisors (see below), whose sum is σ = 3303360. Its totient is φ = 535392.

The previous prime is 1628917. The next prime is 1628933. The reversal of 1628922 is 2298261.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 1628922.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1422 + ... + 2297.

It is an arithmetic number, because the mean of its divisors is an integer number (206460).

2^1628922 is an apocalyptic number.

1628922 is an abundant number, since it is smaller than the sum of its proper divisors (1674438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1628922 is a wasteful number, since it uses less digits than its factorization.

1628922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3797.

The product of its digits is 3456, while the sum is 30.

The square root of 1628922 is about 1276.2922862730. The cubic root of 1628922 is about 117.6612423390.

The spelling of 1628922 in words is "one million, six hundred twenty-eight thousand, nine hundred twenty-two".