285217848 has 96 divisors (see below), whose sum is σ = 836035200. Its totient is φ = 90924768.

The previous prime is 285217847. The next prime is 285217879. The reversal of 285217848 is 848712582.

It is a happy number.

It is a super-2 number, since 2×285217848² = 162698441635502208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285217841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41523 + ... + 47901.

It is an arithmetic number, because the mean of its divisors is an integer number (8708700).

Almost surely, 2^285217848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285217848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (418017600).

285217848 is an abundant number, since it is smaller than the sum of its proper divisors (550817352).

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

285217848 is a wasteful number, since it uses less digits than its factorization.

285217848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6423 (or 6407 counting only the distinct ones).

The product of its digits is 286720, while the sum is 45.

The square root of 285217848 is about 16888.3938845587. The cubic root of 285217848 is about 658.2520691161.

The spelling of 285217848 in words is "two hundred eighty-five million, two hundred seventeen thousand, eight hundred forty-eight".