28273894 has 16 divisors (see below), whose sum is σ = 46702656. Its totient is φ = 12730600.

The previous prime is 28273871. The next prime is 28273901. The reversal of 28273894 is 49837282.

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 28273894.

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, 3652 + ... + 8359.

It is an arithmetic number, because the mean of its divisors is an integer number (2918916).

Almost surely, 2^28273894 is an apocalyptic number.

28273894 is a deficient number, since it is larger than the sum of its proper divisors (18428762).

28273894 is a wasteful number, since it uses less digits than its factorization.

28273894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12131.

The product of its digits is 193536, while the sum is 43.

The square root of 28273894 is about 5317.3201897196. The cubic root of 28273894 is about 304.6458093945.

The spelling of 28273894 in words is "twenty-eight million, two hundred seventy-three thousand, eight hundred ninety-four".