286689396 has 72 divisors (see below), whose sum is σ = 788934720. Its totient is φ = 80777088.

The previous prime is 286689373. The next prime is 286689397. The reversal of 286689396 is 693986682.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (286689397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39585 + ... + 46263.

Almost surely, 2^286689396 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 286689396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (394467360).

286689396 is an abundant number, since it is smaller than the sum of its proper divisors (502245324).

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

286689396 is a wasteful number, since it uses less digits than its factorization.

286689396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6773 (or 6764 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 57.

The square root of 286689396 is about 16931.9046772653. The cubic root of 286689396 is about 659.3821858594.

The spelling of 286689396 in words is "two hundred eighty-six million, six hundred eighty-nine thousand, three hundred ninety-six".