286866880 has 56 divisors (see below), whose sum is σ = 684592992. Its totient is φ = 114496512.

The previous prime is 286866871. The next prime is 286866907. The reversal of 286866880 is 88668682.

It is a happy number.

286866880 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233949 + ... + 235171.

Almost surely, 2^286866880 is an apocalyptic number.

286866880 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 286866880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (342296496).

286866880 is an abundant number, since it is smaller than the sum of its proper divisors (397726112).

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

286866880 is a wasteful number, since it uses less digits than its factorization.

286866880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1973 (or 1963 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 52.

The square root of 286866880 is about 16937.1449778291. The cubic root of 286866880 is about 659.5182281494.

The spelling of 286866880 in words is "two hundred eighty-six million, eight hundred sixty-six thousand, eight hundred eighty".