286264220 has 72 divisors (see below), whose sum is σ = 683726400. Its totient is φ = 100481920.

The previous prime is 286264189. The next prime is 286264229. The reversal of 286264220 is 22462682.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (286264229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68141 + ... + 72219.

It is an arithmetic number, because the mean of its divisors is an integer number (9496200).

Almost surely, 2^286264220 is an apocalyptic number.

286264220 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 286264220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (341863200).

286264220 is an abundant number, since it is smaller than the sum of its proper divisors (397462180).

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

286264220 is a wasteful number, since it uses less digits than its factorization.

286264220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4139 (or 4126 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 286264220 is about 16919.3445499523. The cubic root of 286264220 is about 659.0560580109.

The spelling of 286264220 in words is "two hundred eighty-six million, two hundred sixty-four thousand, two hundred twenty".