28536018 has 32 divisors (see below), whose sum is σ = 65387520. Its totient is φ = 8132880.

The previous prime is 28536007. The next prime is 28536019. The reversal of 28536018 is 81063582.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28536018.

It is not an unprimeable number, because it can be changed into a prime (28536019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27163 + ... + 28193.

It is an arithmetic number, because the mean of its divisors is an integer number (2043360).

Almost surely, 2^28536018 is an apocalyptic number.

28536018 is an abundant number, since it is smaller than the sum of its proper divisors (36851502).

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

28536018 is a wasteful number, since it uses less digits than its factorization.

28536018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1702.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 28536018 is about 5341.9114556496. The cubic root of 28536018 is about 305.5843602940.

The spelling of 28536018 in words is "twenty-eight million, five hundred thirty-six thousand, eighteen".