286139682 has 64 divisors (see below), whose sum is σ = 675941760. Its totient is φ = 89413632.

The previous prime is 286139681. The next prime is 286139687. The reversal of 286139682 is 286931682.

286139682 is a `hidden beast` number, since 28 + 613 + 9 + 6 + 8 + 2 = 666.

286139682 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×286139682² = 163751835230122248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (286139681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 323613 + ... + 324495.

It is an arithmetic number, because the mean of its divisors is an integer number (10561590).

Almost surely, 2^286139682 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 286139682, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (337970880).

286139682 is an abundant number, since it is smaller than the sum of its proper divisors (389802078).

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

286139682 is a wasteful number, since it uses less digits than its factorization.

286139682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264 (or 1258 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 286139682 is about 16915.6638060704. The cubic root of 286139682 is about 658.9604709938.

The spelling of 286139682 in words is "two hundred eighty-six million, one hundred thirty-nine thousand, six hundred eighty-two".