285748680 has 128 divisors (see below), whose sum is σ = 1003726080. Its totient is φ = 63713280.

The previous prime is 285748679. The next prime is 285748681. The reversal of 285748680 is 86847582.

It is an interprime number because it is at equal distance from previous prime (285748679) and next prime (285748681).

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (285748681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30292 + ... + 38588.

It is an arithmetic number, because the mean of its divisors is an integer number (7841610).

Almost surely, 2^285748680 is an apocalyptic number.

285748680 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 285748680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (501863040).

285748680 is an abundant number, since it is smaller than the sum of its proper divisors (717977400).

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

285748680 is a wasteful number, since it uses less digits than its factorization.

285748680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8359 (or 8355 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 48.

The square root of 285748680 is about 16904.1024606455. The cubic root of 285748680 is about 658.6601837251.

The spelling of 285748680 in words is "two hundred eighty-five million, seven hundred forty-eight thousand, six hundred eighty".