28375230 has 64 divisors (see below), whose sum is σ = 75737088. Its totient is φ = 6756480.

The previous prime is 28375201. The next prime is 28375279. The reversal of 28375230 is 3257382.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10917 + ... + 13263.

It is an arithmetic number, because the mean of its divisors is an integer number (1183392).

Almost surely, 2^28375230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28375230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37868544).

28375230 is an abundant number, since it is smaller than the sum of its proper divisors (47361858).

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

28375230 is a wasteful number, since it uses less digits than its factorization.

28375230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2401.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 28375230 is about 5326.8405269916. The cubic root of 28375230 is about 305.0093341227.

The spelling of 28375230 in words is "twenty-eight million, three hundred seventy-five thousand, two hundred thirty".