3186428 has 24 divisors (see below), whose sum is σ = 6580224. Its totient is φ = 1321200.

The previous prime is 3186427. The next prime is 3186437. The reversal of 3186428 is 8246813.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a d-powerful number, because it can be written as 3³ + 1 + 8⁵ + 6⁵ + 4¹⁰ + 2⁷ + 8⁷ .

It is a junction number, because it is equal to n+sod(n) for n = 3186394 and 3186403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3186427) by changing a digit.

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, 968 + ... + 2703.

It is an arithmetic number, because the mean of its divisors is an integer number (274176).

Almost surely, 2^3186428 is an apocalyptic number.

It is an amenable number.

3186428 is an abundant number, since it is smaller than the sum of its proper divisors (3393796).

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

3186428 is a wasteful number, since it uses less digits than its factorization.

3186428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3713 (or 3711 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 3186428 is about 1785.0568618394. The cubic root of 3186428 is about 147.1526327391.

The spelling of 3186428 in words is "three million, one hundred eighty-six thousand, four hundred twenty-eight".