285340260 has 48 divisors (see below), whose sum is σ = 817540416. Its totient is φ = 74320512.

The previous prime is 285340247. The next prime is 285340261. The reversal of 285340260 is 62043582.

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

It is not an unprimeable number, because it can be changed into a prime (285340261) 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 15 ways as a sum of consecutive naturals, for example, 52719 + ... + 57878.

It is an arithmetic number, because the mean of its divisors is an integer number (17032092).

Almost surely, 2^285340260 is an apocalyptic number.

285340260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285340260 is an abundant number, since it is smaller than the sum of its proper divisors (532200156).

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

285340260 is a wasteful number, since it uses less digits than its factorization.

285340260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110652 (or 110650 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 285340260 is about 16892.0176414779. The cubic root of 285340260 is about 658.3462268834.

The spelling of 285340260 in words is "two hundred eighty-five million, three hundred forty thousand, two hundred sixty".