1628166 has 16 divisors (see below), whose sum is σ = 3294000. Its totient is φ = 536448.

The previous prime is 1628161. The next prime is 1628171. The reversal of 1628166 is 6618261.

It is an interprime number because it is at equal distance from previous prime (1628161) and next prime (1628171).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1628161) 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, 991 + ... + 2058.

It is an arithmetic number, because the mean of its divisors is an integer number (205875).

2^1628166 is an apocalyptic number.

1628166 is an abundant number, since it is smaller than the sum of its proper divisors (1665834).

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

1628166 is a wasteful number, since it uses less digits than its factorization.

1628166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3143.

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

The square root of 1628166 is about 1275.9960814987. The cubic root of 1628166 is about 117.6430369115.

It can be divided in two parts, 16 and 28166, that added together give a palindrome (28182).

The spelling of 1628166 in words is "one million, six hundred twenty-eight thousand, one hundred sixty-six".