28159158 has 8 divisors (see below), whose sum is σ = 56318328. Its totient is φ = 9386384.

The previous prime is 28159151. The next prime is 28159171. The reversal of 28159158 is 85195182.

It is a sphenic number, since it is the product of 3 distinct primes.

28159158 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28159151) 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, 2346591 + ... + 2346602.

It is an arithmetic number, because the mean of its divisors is an integer number (7039791).

Almost surely, 2^28159158 is an apocalyptic number.

28159158 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28159158 is a wasteful number, since it uses less digits than its factorization.

28159158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4693198.

The product of its digits is 28800, while the sum is 39.

The square root of 28159158 is about 5306.5203288030. The cubic root of 28159158 is about 304.2331645523.

The spelling of 28159158 in words is "twenty-eight million, one hundred fifty-nine thousand, one hundred fifty-eight".