28093230 has 96 divisors (see below), whose sum is σ = 82712448. Its totient is φ = 6804000.

The previous prime is 28093211. The next prime is 28093243. The reversal of 28093230 is 3239082.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 28093194 and 28093203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26205 + ... + 27255.

It is an arithmetic number, because the mean of its divisors is an integer number (861588).

Almost surely, 2^28093230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28093230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41356224).

28093230 is an abundant number, since it is smaller than the sum of its proper divisors (54619218).

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

28093230 is a wasteful number, since it uses less digits than its factorization.

28093230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084 (or 1072 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 28093230 is about 5300.3047082220. The cubic root of 28093230 is about 303.9955490461.

The spelling of 28093230 in words is "twenty-eight million, ninety-three thousand, two hundred thirty".