286949880 has 144 divisors (see below), whose sum is σ = 1084912920. Its totient is φ = 65584512.

The previous prime is 286949849. The next prime is 286949881. The reversal of 286949880 is 88949682.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (286949881) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9507 + ... + 25773.

Almost surely, 2^286949880 is an apocalyptic number.

286949880 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 286949880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (542456460).

286949880 is an abundant number, since it is smaller than the sum of its proper divisors (797963040).

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

286949880 is a wasteful number, since it uses less digits than its factorization.

286949880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16298 (or 16284 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The square root of 286949880 is about 16939.5950364818. The cubic root of 286949880 is about 659.5818287696.

The spelling of 286949880 in words is "two hundred eighty-six million, nine hundred forty-nine thousand, eight hundred eighty".