286874280 has 384 divisors, whose sum is σ = 1186099200. Its totient is φ = 58406400.

The previous prime is 286874257. The next prime is 286874281. The reversal of 286874280 is 82478682.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (286874281) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2189815 + ... + 2189945.

It is an arithmetic number, because the mean of its divisors is an integer number (3088800).

Almost surely, 2^286874280 is an apocalyptic number.

286874280 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 286874280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (593049600).

286874280 is an abundant number, since it is smaller than the sum of its proper divisors (899224920).

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

286874280 is a wasteful number, since it uses less digits than its factorization.

286874280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 45.

The square root of 286874280 is about 16937.3634311837. The cubic root of 286874280 is about 659.5238990642.

The spelling of 286874280 in words is "two hundred eighty-six million, eight hundred seventy-four thousand, two hundred eighty".