285193842 has 16 divisors (see below), whose sum is σ = 572225472. Its totient is φ = 94758320.

The previous prime is 285193829. The next prime is 285193927. The reversal of 285193842 is 248391582.

It is a junction number, because it is equal to n+sod(n) for n = 285193794 and 285193803.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74553 + ... + 78284.

It is an arithmetic number, because the mean of its divisors is an integer number (35764092).

Almost surely, 2^285193842 is an apocalyptic number.

285193842 is an abundant number, since it is smaller than the sum of its proper divisors (287031630).

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

285193842 is a wasteful number, since it uses less digits than its factorization.

285193842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153153.

The product of its digits is 138240, while the sum is 42.

The square root of 285193842 is about 16887.6831448248. The cubic root of 285193842 is about 658.2336008439.

The spelling of 285193842 in words is "two hundred eighty-five million, one hundred ninety-three thousand, eight hundred forty-two".