30828189 has 32 divisors (see below), whose sum is σ = 49029120. Its totient is φ = 16857792.

The previous prime is 30828181. The next prime is 30828197. The reversal of 30828189 is 98182803.

It is an interprime number because it is at equal distance from previous prime (30828181) and next prime (30828197).

It is not a de Polignac number, because 30828189 - 2³ = 30828181 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30828181) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 135694 + ... + 135920.

It is an arithmetic number, because the mean of its divisors is an integer number (1532160).

Almost surely, 2^30828189 is an apocalyptic number.

It is an amenable number.

30828189 is a deficient number, since it is larger than the sum of its proper divisors (18200931).

30828189 is a wasteful number, since it uses less digits than its factorization.

30828189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489.

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 30828189 is about 5552.3138419942. The cubic root of 30828189 is about 313.5566416534.

The spelling of 30828189 in words is "thirty million, eight hundred twenty-eight thousand, one hundred eighty-nine".