285345788 has 48 divisors (see below), whose sum is σ = 622433280. Its totient is φ = 111443904.

The previous prime is 285345779. The next prime is 285345791. The reversal of 285345788 is 887543582.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23795 + ... + 33717.

It is an arithmetic number, because the mean of its divisors is an integer number (12967360).

Almost surely, 2^285345788 is an apocalyptic number.

285345788 is a gapful number since it is divisible by the number (28) 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 285345788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311216640).

285345788 is an abundant number, since it is smaller than the sum of its proper divisors (337087492).

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

285345788 is a wasteful number, since it uses less digits than its factorization.

285345788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10026 (or 10024 counting only the distinct ones).

The product of its digits is 2150400, while the sum is 50.

The square root of 285345788 is about 16892.1812682673. The cubic root of 285345788 is about 658.3504783158.

The spelling of 285345788 in words is "two hundred eighty-five million, three hundred forty-five thousand, seven hundred eighty-eight".