28102230 has 48 divisors (see below), whose sum is σ = 78689520. Its totient is φ = 6917184.

The previous prime is 28102229. The next prime is 28102253. The reversal of 28102230 is 3220182.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10840 + ... + 13179.

It is an arithmetic number, because the mean of its divisors is an integer number (1639365).

Almost surely, 2^28102230 is an apocalyptic number.

28102230 is an abundant number, since it is smaller than the sum of its proper divisors (50587290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28102230 is a wasteful number, since it uses less digits than its factorization.

28102230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24045 (or 24042 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 28102230 is about 5301.1536480279. The cubic root of 28102230 is about 304.0280084420.

The spelling of 28102230 in words is "twenty-eight million, one hundred two thousand, two hundred thirty".