28189034 has 4 divisors (see below), whose sum is σ = 42283554. Its totient is φ = 14094516.

The previous prime is 28189033. The next prime is 28189069. The reversal of 28189034 is 43098182.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15960025 + 12229009 = 3995^2 + 3497^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28188985 and 28189003.

It is not an unprimeable number, because it can be changed into a prime (28189033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7047257 + ... + 7047260.

Almost surely, 2^28189034 is an apocalyptic number.

28189034 is a deficient number, since it is larger than the sum of its proper divisors (14094520).

28189034 is a wasteful number, since it uses less digits than its factorization.

28189034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14094519.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 28189034 is about 5309.3346099111. The cubic root of 28189034 is about 304.3407205315.

The spelling of 28189034 in words is "twenty-eight million, one hundred eighty-nine thousand, thirty-four".