3189636 has 36 divisors (see below), whose sum is σ = 8263164. Its totient is φ = 1036800.

The previous prime is 3189619. The next prime is 3189647. The reversal of 3189636 is 6369813.

It is a happy number.

3189636 is a `hidden beast` number, since 3 + 18 + 9 + 636 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 921600 + 2268036 = 960^2 + 1506^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a d-powerful number, because it can be written as 3¹³ + 1 + 8 + 9³ + 6² + 3¹³ + 6³ .

It is a self number, because there is not a number n which added to its sum of digits gives 3189636.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 396 + ... + 2556.

Almost surely, 2^3189636 is an apocalyptic number.

3189636 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3189636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4131582).

3189636 is an abundant number, since it is smaller than the sum of its proper divisors (5073528).

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

3189636 is a wasteful number, since it uses less digits than its factorization.

3189636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2212 (or 2207 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 3189636 is about 1785.9552066051. The cubic root of 3189636 is about 147.2019991261.

The spelling of 3189636 in words is "three million, one hundred eighty-nine thousand, six hundred thirty-six".