28135018 has 16 divisors (see below), whose sum is σ = 42739200. Its totient is φ = 13890096.

The previous prime is 28135013. The next prime is 28135021. The reversal of 28135018 is 81053182.

It is not an unprimeable number, because it can be changed into a prime (28135013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88596 + ... + 88912.

It is an arithmetic number, because the mean of its divisors is an integer number (2671200).

Almost surely, 2^28135018 is an apocalyptic number.

28135018 is a deficient number, since it is larger than the sum of its proper divisors (14604182).

28135018 is a wasteful number, since it uses less digits than its factorization.

28135018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 28135018 is about 5304.2452809047. The cubic root of 28135018 is about 304.1462030477.

The spelling of 28135018 in words is "twenty-eight million, one hundred thirty-five thousand, eighteen".