286475920 has 160 divisors (see below), whose sum is σ = 743702400. Its totient is φ = 102187008.

The previous prime is 286475899. The next prime is 286475921. The reversal of 286475920 is 29574682.

286475920 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (286475921) 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, 2953312 + ... + 2953408.

It is an arithmetic number, because the mean of its divisors is an integer number (4648140).

Almost surely, 2^286475920 is an apocalyptic number.

286475920 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 286475920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (371851200).

286475920 is an abundant number, since it is smaller than the sum of its proper divisors (457226480).

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

286475920 is a wasteful number, since it uses less digits than its factorization.

286475920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 286475920 is about 16925.5995462495. The cubic root of 286475920 is about 659.2184811366.

The spelling of 286475920 in words is "two hundred eighty-six million, four hundred seventy-five thousand, nine hundred twenty".