286055220 has 96 divisors (see below), whose sum is σ = 879459840. Its totient is φ = 68895360.

The previous prime is 286055201. The next prime is 286055239. The reversal of 286055220 is 22550682.

It is an interprime number because it is at equal distance from previous prime (286055201) and next prime (286055239).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106251 + ... + 108909.

It is an arithmetic number, because the mean of its divisors is an integer number (9161040).

Almost surely, 2^286055220 is an apocalyptic number.

286055220 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 286055220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (439729920).

286055220 is an abundant number, since it is smaller than the sum of its proper divisors (593404620).

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

286055220 is a wasteful number, since it uses less digits than its factorization.

286055220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2845 (or 2843 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 286055220 is about 16913.1670600157. The cubic root of 286055220 is about 658.8956278420.

The spelling of 286055220 in words is "two hundred eighty-six million, fifty-five thousand, two hundred twenty".