285046720 has 168 divisors, whose sum is σ = 806829984. Its totient is φ = 95886336.

The previous prime is 285046711. The next prime is 285046747. The reversal of 285046720 is 27640582.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5378214 + ... + 5378266.

Almost surely, 2^285046720 is an apocalyptic number.

285046720 is a gapful number since it is divisible by the number (20) 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 285046720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (403414992).

285046720 is an abundant number, since it is smaller than the sum of its proper divisors (521783264).

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

285046720 is an frugal number, since it uses more digits than its factorization.

285046720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 285046720 is about 16883.3266864087. The cubic root of 285046720 is about 658.1203944481.

The spelling of 285046720 in words is "two hundred eighty-five million, forty-six thousand, seven hundred twenty".