28159114 has 4 divisors (see below), whose sum is σ = 42238674. Its totient is φ = 14079556.

The previous prime is 28159111. The next prime is 28159139. The reversal of 28159114 is 41195182.

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., 27092025 + 1067089 = 5205^2 + 1033^2 .

It is not an unprimeable number, because it can be changed into a prime (28159111) 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 as a sum of consecutive naturals, namely, 7039777 + ... + 7039780.

Almost surely, 2^28159114 is an apocalyptic number.

28159114 is a deficient number, since it is larger than the sum of its proper divisors (14079560).

28159114 is a wasteful number, since it uses less digits than its factorization.

28159114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14079559.

The product of its digits is 2880, while the sum is 31.

The square root of 28159114 is about 5306.5161829585. The cubic root of 28159114 is about 304.2330060927.

It can be divided in two parts, 281 and 59114, that added together give a palindrome (59395).

The spelling of 28159114 in words is "twenty-eight million, one hundred fifty-nine thousand, one hundred fourteen".