285008133 has 16 divisors (see below), whose sum is σ = 386966720. Its totient is φ = 186551424.

The previous prime is 285008131. The next prime is 285008137. The reversal of 285008133 is 331800582.

It is a happy number.

It is not a de Polignac number, because 285008133 - 2¹ = 285008131 is a prime.

It is a super-2 number, since 2×285008133² = 162459271752291378, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 285008133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285008131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47310 + ... + 52992.

It is an arithmetic number, because the mean of its divisors is an integer number (24185420).

Almost surely, 2^285008133 is an apocalyptic number.

It is an amenable number.

285008133 is a deficient number, since it is larger than the sum of its proper divisors (101958587).

285008133 is a wasteful number, since it uses less digits than its factorization.

285008133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5988.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 285008133 is about 16882.1838930868. The cubic root of 285008133 is about 658.0906963485.

The spelling of 285008133 in words is "two hundred eighty-five million, eight thousand, one hundred thirty-three".