285396 has 24 divisors (see below), whose sum is σ = 705600. Its totient is φ = 89472.

The previous prime is 285377. The next prime is 285421. The reversal of 285396 is 693582.

285396 = T₁₆₉ + T₁₇₀ + ... + T₁₈₆.

It is a happy number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 285396.

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, 496 + ... + 903.

It is an arithmetic number, because the mean of its divisors is an integer number (29400).

2²⁸⁵³⁹⁶ is an apocalyptic number.

It is an amenable number.

285396 is an abundant number, since it is smaller than the sum of its proper divisors (420204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

285396 is a wasteful number, since it uses less digits than its factorization.

285396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423 (or 1421 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 285396 is about 534.2246718376. The cubic root of 285396 is about 65.8389092466.

The spelling of 285396 in words is "two hundred eighty-five thousand, three hundred ninety-six".