285660672 has 240 divisors, whose sum is σ = 881662320. Its totient is φ = 82001920.

The previous prime is 285660671. The next prime is 285660677. The reversal of 285660672 is 276066582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285660671) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5389798 + ... + 5389850.

It is an arithmetic number, because the mean of its divisors is an integer number (3673593).

Almost surely, 2^285660672 is an apocalyptic number.

285660672 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285660672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (440831160).

285660672 is an abundant number, since it is smaller than the sum of its proper divisors (596001648).

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

285660672 is a wasteful number, since it uses less digits than its factorization.

285660672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 285660672 is about 16901.4991051090. The cubic root of 285660672 is about 658.5925563289.

The spelling of 285660672 in words is "two hundred eighty-five million, six hundred sixty thousand, six hundred seventy-two".