285629229 has 6 divisors (see below), whose sum is σ = 412575566. Its totient is φ = 190419480.

The previous prime is 285629209. The next prime is 285629251. The reversal of 285629229 is 922926582.

It can be written as a sum of positive squares in only one way, i.e., 242424900 + 43204329 = 15570^2 + 6573^2 .

It is not a de Polignac number, because 285629229 - 2²⁸ = 17193773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285629209) 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 5 ways as a sum of consecutive naturals, for example, 15868282 + ... + 15868299.

Almost surely, 2^285629229 is an apocalyptic number.

It is an amenable number.

285629229 is a deficient number, since it is larger than the sum of its proper divisors (126946337).

285629229 is a wasteful number, since it uses less digits than its factorization.

285629229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31736587 (or 31736584 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 285629229 is about 16900.5688957502. The cubic root of 285629229 is about 658.5683914279.

The spelling of 285629229 in words is "two hundred eighty-five million, six hundred twenty-nine thousand, two hundred twenty-nine".