28263230 has 8 divisors (see below), whose sum is σ = 50873832. Its totient is φ = 11305288.

The previous prime is 28263229. The next prime is 28263233. The reversal of 28263230 is 3236282.

It is a happy number.

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 28263230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28263233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1413152 + ... + 1413171.

It is an arithmetic number, because the mean of its divisors is an integer number (6359229).

Almost surely, 2^28263230 is an apocalyptic number.

28263230 is a deficient number, since it is larger than the sum of its proper divisors (22610602).

28263230 is a wasteful number, since it uses less digits than its factorization.

28263230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2826330.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 28263230 is about 5316.3173343961. The cubic root of 28263230 is about 304.6075037236.

The spelling of 28263230 in words is "twenty-eight million, two hundred sixty-three thousand, two hundred thirty".