285313536 has 80 divisors (see below), whose sum is σ = 844588800. Its totient is φ = 95099904.

The previous prime is 285313529. The next prime is 285313541. The reversal of 285313536 is 635313582.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 285313536.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3505 + ... + 24143.

It is an arithmetic number, because the mean of its divisors is an integer number (10557360).

Almost surely, 2^285313536 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 285313536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (422294400).

285313536 is an abundant number, since it is smaller than the sum of its proper divisors (559275264).

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

285313536 is an equidigital number, since it uses as much as digits as its factorization.

285313536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20666 (or 20644 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 285313536 is about 16891.2265984445. The cubic root of 285313536 is about 658.3256734176.

The spelling of 285313536 in words is "two hundred eighty-five million, three hundred thirteen thousand, five hundred thirty-six".