28355230 has 8 divisors (see below), whose sum is σ = 51039432. Its totient is φ = 11342088.

The previous prime is 28355227. The next prime is 28355237. The reversal of 28355230 is 3255382.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28355237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1417752 + ... + 1417771.

It is an arithmetic number, because the mean of its divisors is an integer number (6379929).

Almost surely, 2^28355230 is an apocalyptic number.

28355230 is a deficient number, since it is larger than the sum of its proper divisors (22684202).

28355230 is a wasteful number, since it uses less digits than its factorization.

28355230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2835530.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 28355230 is about 5324.9629106690. The cubic root of 28355230 is about 304.9376563429.

The spelling of 28355230 in words is "twenty-eight million, three hundred fifty-five thousand, two hundred thirty".