285142198 has 16 divisors (see below), whose sum is σ = 470162880. Its totient is φ = 128619400.

The previous prime is 285142189. The next prime is 285142217. The reversal of 285142198 is 891241582.

It is a self number, because there is not a number n which added to its sum of digits gives 285142198.

It is a congruent number.

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, 46588 + ... + 52351.

It is an arithmetic number, because the mean of its divisors is an integer number (29385180).

Almost surely, 2^285142198 is an apocalyptic number.

285142198 is a deficient number, since it is larger than the sum of its proper divisors (185020682).

285142198 is a wasteful number, since it uses less digits than its factorization.

285142198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99083.

The product of its digits is 46080, while the sum is 40.

The square root of 285142198 is about 16886.1540322242. The cubic root of 285142198 is about 658.1938666197.

The spelling of 285142198 in words is "two hundred eighty-five million, one hundred forty-two thousand, one hundred ninety-eight".