28456234 has 8 divisors (see below), whose sum is σ = 42745248. Its totient is φ = 14207820.

The previous prime is 28456229. The next prime is 28456247. The reversal of 28456234 is 43265482.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 28456234.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8332 + ... + 11239.

It is an arithmetic number, because the mean of its divisors is an integer number (5343156).

Almost surely, 2^28456234 is an apocalyptic number.

28456234 is a deficient number, since it is larger than the sum of its proper divisors (14289014).

28456234 is a wasteful number, since it uses less digits than its factorization.

28456234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20300.

The product of its digits is 46080, while the sum is 34.

The square root of 28456234 is about 5334.4384896632. The cubic root of 28456234 is about 305.2992994977.

The spelling of 28456234 in words is "twenty-eight million, four hundred fifty-six thousand, two hundred thirty-four".