285275250 has 128 divisors (see below), whose sum is σ = 852284160. Its totient is φ = 70200000.

The previous prime is 285275219. The next prime is 285275257. The reversal of 285275250 is 52572582.

It is not an unprimeable number, because it can be changed into a prime (285275257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 86125 + ... + 89375.

It is an arithmetic number, because the mean of its divisors is an integer number (6658470).

Almost surely, 2^285275250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285275250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (426142080).

285275250 is an abundant number, since it is smaller than the sum of its proper divisors (567008910).

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

285275250 is a wasteful number, since it uses less digits than its factorization.

285275250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3290 (or 3274 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 36.

The square root of 285275250 is about 16890.0932501866. The cubic root of 285275250 is about 658.2962253648.

The spelling of 285275250 in words is "two hundred eighty-five million, two hundred seventy-five thousand, two hundred fifty".