32428189 has 4 divisors (see below), whose sum is σ = 32467680. Its totient is φ = 32388700.

The previous prime is 32428159. The next prime is 32428199. The reversal of 32428189 is 98182423.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 32428189 - 2¹⁷ = 32297117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32428159) 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, 18487 + ... + 20164.

It is an arithmetic number, because the mean of its divisors is an integer number (8116920).

Almost surely, 2^32428189 is an apocalyptic number.

It is an amenable number.

32428189 is a deficient number, since it is larger than the sum of its proper divisors (39491).

32428189 is an equidigital number, since it uses as much as digits as its factorization.

32428189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39490.

The product of its digits is 27648, while the sum is 37.

The square root of 32428189 is about 5694.5754012042. The cubic root of 32428189 is about 318.8899985303.

The spelling of 32428189 in words is "thirty-two million, four hundred twenty-eight thousand, one hundred eighty-nine".