28275038 has 24 divisors (see below), whose sum is σ = 48135360. Its totient is φ = 12434400.

The previous prime is 28275031. The next prime is 28275041. The reversal of 28275038 is 83057282.

It is a happy number.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28274989 and 28275007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28275031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5618 + ... + 9386.

It is an arithmetic number, because the mean of its divisors is an integer number (2005640).

Almost surely, 2^28275038 is an apocalyptic number.

28275038 is a deficient number, since it is larger than the sum of its proper divisors (19860322).

28275038 is a wasteful number, since it uses less digits than its factorization.

28275038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3824 (or 3813 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 28275038 is about 5317.4277616156. The cubic root of 28275038 is about 304.6499181330.

The spelling of 28275038 in words is "twenty-eight million, two hundred seventy-five thousand, thirty-eight".