285664368 has 80 divisors (see below), whose sum is σ = 814233600. Its totient is φ = 85578240.

The previous prime is 285664363. The next prime is 285664369. The reversal of 285664368 is 863466582.

It is a super-2 number, since 2×285664368² = 163208262289678848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285664363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43953 + ... + 50031.

It is an arithmetic number, because the mean of its divisors is an integer number (10177920).

Almost surely, 2^285664368 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 285664368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (407116800).

285664368 is an abundant number, since it is smaller than the sum of its proper divisors (528569232).

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

285664368 is a wasteful number, since it uses less digits than its factorization.

285664368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6190 (or 6184 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 48.

The square root of 285664368 is about 16901.6084441689. The cubic root of 285664368 is about 658.5953967007.

The spelling of 285664368 in words is "two hundred eighty-five million, six hundred sixty-four thousand, three hundred sixty-eight".