1628444 has 12 divisors (see below), whose sum is σ = 2927064. Its totient is φ = 792144.

The previous prime is 1628441. The next prime is 1628467. The reversal of 1628444 is 4448261.

It is a super-2 number, since 2×1628444² = 5303659722272, which contains 22 as substring.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1628441) 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, 5354 + ... + 5649.

It is an arithmetic number, because the mean of its divisors is an integer number (243922).

2^1628444 is an apocalyptic number.

It is an amenable number.

1628444 is a deficient number, since it is larger than the sum of its proper divisors (1298620).

1628444 is a wasteful number, since it uses less digits than its factorization.

1628444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11044 (or 11042 counting only the distinct ones).

The product of its digits is 6144, while the sum is 29.

The square root of 1628444 is about 1276.1050113529. The cubic root of 1628444 is about 117.6497321549.

The spelling of 1628444 in words is "one million, six hundred twenty-eight thousand, four hundred forty-four".