1628944 has 20 divisors (see below), whose sum is σ = 3209740. Its totient is φ = 800640.

The previous prime is 1628933. The next prime is 1628947. The reversal of 1628944 is 4498261.

It can be written as a sum of positive squares in 2 ways, for example, as 374544 + 1254400 = 612^2 + 1120^2 .

It is not an unprimeable number, because it can be changed into a prime (1628947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142 + ... + 1810.

It is an arithmetic number, because the mean of its divisors is an integer number (160487).

2^1628944 is an apocalyptic number.

It is an amenable number.

1628944 is a deficient number, since it is larger than the sum of its proper divisors (1580796).

1628944 is a wasteful number, since it uses less digits than its factorization.

1628944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1738 (or 1732 counting only the distinct ones).

The product of its digits is 13824, while the sum is 34.

The square root of 1628944 is about 1276.3009049593. The cubic root of 1628944 is about 117.6617720422.

The spelling of 1628944 in words is "one million, six hundred twenty-eight thousand, nine hundred forty-four".