285256214 has 16 divisors (see below), whose sum is σ = 435598560. Its totient is φ = 140078400.

The previous prime is 285256211. The next prime is 285256247. The reversal of 285256214 is 412652582.

It is a super-2 number, since 2×285256214² = 162742215251227592, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285256211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21572 + ... + 32184.

It is an arithmetic number, because the mean of its divisors is an integer number (27224910).

Almost surely, 2^285256214 is an apocalyptic number.

285256214 is a deficient number, since it is larger than the sum of its proper divisors (150342346).

285256214 is a wasteful number, since it uses less digits than its factorization.

285256214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10855.

The product of its digits is 38400, while the sum is 35.

The square root of 285256214 is about 16889.5297151815. The cubic root of 285256214 is about 658.2815826578.

The spelling of 285256214 in words is "two hundred eighty-five million, two hundred fifty-six thousand, two hundred fourteen".