285133894 has 8 divisors (see below), whose sum is σ = 452859768. Its totient is φ = 134180640.

The previous prime is 285133861. The next prime is 285133907. The reversal of 285133894 is 498331582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 285133894.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4193112 + ... + 4193179.

It is an arithmetic number, because the mean of its divisors is an integer number (56607471).

Almost surely, 2^285133894 is an apocalyptic number.

285133894 is a deficient number, since it is larger than the sum of its proper divisors (167725874).

285133894 is a wasteful number, since it uses less digits than its factorization.

285133894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8386310.

The product of its digits is 207360, while the sum is 43.

The square root of 285133894 is about 16885.9081485125. The cubic root of 285133894 is about 658.1874771820.

The spelling of 285133894 in words is "two hundred eighty-five million, one hundred thirty-three thousand, eight hundred ninety-four".