28874159 has 4 divisors (see below), whose sum is σ = 28894416. Its totient is φ = 28853904.

The previous prime is 28874149. The next prime is 28874161. The reversal of 28874159 is 95147882.

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

It is a cyclic number.

It is not a de Polignac number, because 28874159 - 2⁸ = 28873903 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 (28874149) 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, 7814 + ... + 10899.

It is an arithmetic number, because the mean of its divisors is an integer number (7223604).

Almost surely, 2^28874159 is an apocalyptic number.

28874159 is a deficient number, since it is larger than the sum of its proper divisors (20257).

28874159 is a wasteful number, since it uses less digits than its factorization.

28874159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20256.

The product of its digits is 161280, while the sum is 44.

The square root of 28874159 is about 5373.4680607593. The cubic root of 28874159 is about 306.7866434829.

It can be divided in two parts, 288 and 74159, that added together give a palindrome (74447).

The spelling of 28874159 in words is "twenty-eight million, eight hundred seventy-four thousand, one hundred fifty-nine".