28236118 has 8 divisors (see below), whose sum is σ = 42791112. Its totient is φ = 13972416.

The previous prime is 28236113. The next prime is 28236119. The reversal of 28236118 is 81163282.

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

It is a self number, because there is not a number n which added to its sum of digits gives 28236118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28236113) 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, 72580 + ... + 72967.

It is an arithmetic number, because the mean of its divisors is an integer number (5348889).

Almost surely, 2^28236118 is an apocalyptic number.

28236118 is a deficient number, since it is larger than the sum of its proper divisors (14554994).

28236118 is a wasteful number, since it uses less digits than its factorization.

28236118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145646.

The product of its digits is 4608, while the sum is 31.

The square root of 28236118 is about 5313.7668371881. The cubic root of 28236118 is about 304.5100725294.

The spelling of 28236118 in words is "twenty-eight million, two hundred thirty-six thousand, one hundred eighteen".