285010005 has 32 divisors (see below), whose sum is σ = 524991744. Its totient is φ = 129332736.

The previous prime is 285010003. The next prime is 285010079. The reversal of 285010005 is 500010582.

It is not a de Polignac number, because 285010005 - 2¹ = 285010003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285010003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4479 + ... + 24291.

It is an arithmetic number, because the mean of its divisors is an integer number (16405992).

Almost surely, 2^285010005 is an apocalyptic number.

It is an amenable number.

285010005 is a deficient number, since it is larger than the sum of its proper divisors (239981739).

285010005 is a wasteful number, since it uses less digits than its factorization.

285010005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19965.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 285010005 is about 16882.2393360597. The cubic root of 285010005 is about 658.0921371765.

Adding to 285010005 its reverse (500010582), we get a palindrome (785020587).

The spelling of 285010005 in words is "two hundred eighty-five million, ten thousand, five".