285920336 has 20 divisors (see below), whose sum is σ = 596584212. Its totient is φ = 131963136.

The previous prime is 285920333. The next prime is 285920363. The reversal of 285920336 is 633029582.

It can be written as a sum of positive squares in 2 ways, for example, as 59598400 + 226321936 = 7720^2 + 15044^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 285920336.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285920333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 687101 + ... + 687516.

Almost surely, 2^285920336 is an apocalyptic number.

285920336 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

285920336 is an abundant number, since it is smaller than the sum of its proper divisors (310663876).

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

285920336 is a wasteful number, since it uses less digits than its factorization.

285920336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374638 (or 1374632 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 285920336 is about 16909.1790457136. The cubic root of 285920336 is about 658.7920482481.

The spelling of 285920336 in words is "two hundred eighty-five million, nine hundred twenty thousand, three hundred thirty-six".