286684380 has 48 divisors (see below), whose sum is σ = 891908640. Its totient is φ = 76449024.

The previous prime is 286684327. The next prime is 286684381. The reversal of 286684380 is 83486682.

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 (286684381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264909 + ... + 265988.

It is an arithmetic number, because the mean of its divisors is an integer number (18581430).

Almost surely, 2^286684380 is an apocalyptic number.

286684380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

286684380 is an abundant number, since it is smaller than the sum of its proper divisors (605224260).

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

286684380 is a wasteful number, since it uses less digits than its factorization.

286684380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530915 (or 530907 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The square root of 286684380 is about 16931.7565538842. The cubic root of 286684380 is about 659.3783402570.

The spelling of 286684380 in words is "two hundred eighty-six million, six hundred eighty-four thousand, three hundred eighty".