285001290 has 96 divisors (see below), whose sum is σ = 874238976. Its totient is φ = 63037440.

The previous prime is 285001267. The next prime is 285001331. The reversal of 285001290 is 92100582.

285001290 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon 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, 12234 + ... + 26826.

It is an arithmetic number, because the mean of its divisors is an integer number (9106656).

Almost surely, 2^285001290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285001290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (437119488).

285001290 is an abundant number, since it is smaller than the sum of its proper divisors (589237686).

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

285001290 is a wasteful number, since it uses less digits than its factorization.

285001290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14644 (or 14641 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 285001290 is about 16881.9812225935. The cubic root of 285001290 is about 658.0854294220.

The spelling of 285001290 in words is "two hundred eighty-five million, one thousand, two hundred ninety".