28238694 has 16 divisors (see below), whose sum is σ = 61611840. Its totient is φ = 8557160.

The previous prime is 28238671. The next prime is 28238701. The reversal of 28238694 is 49683282.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213864 + ... + 213995.

It is an arithmetic number, because the mean of its divisors is an integer number (3850740).

Almost surely, 2^28238694 is an apocalyptic number.

28238694 is an abundant number, since it is smaller than the sum of its proper divisors (33373146).

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

28238694 is a wasteful number, since it uses less digits than its factorization.

28238694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427875.

The product of its digits is 165888, while the sum is 42.

The square root of 28238694 is about 5314.0092209179. The cubic root of 28238694 is about 304.5193324672.

The spelling of 28238694 in words is "twenty-eight million, two hundred thirty-eight thousand, six hundred ninety-four".