398286 has 48 divisors (see below), whose sum is σ = 1029600. Its totient is φ = 108864.

The previous prime is 398273. The next prime is 398287. The reversal of 398286 is 682893.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a nialpdrome in base 9 and base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 398286.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398287) by changing a digit.

398286 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3600 + ... + 3708.

It is an arithmetic number, because the mean of its divisors is an integer number (21450).

2³⁹⁸²⁸⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 398286, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (514800).

398286 is an abundant number, since it is smaller than the sum of its proper divisors (631314).

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

398286 is a wasteful number, since it uses less digits than its factorization.

398286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 150 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 398286 is about 631.0990413556. The cubic root of 398286 is about 73.5752387956.

It can be divided in two parts, 3 and 98286, that added together give a palindrome (98289).

The spelling of 398286 in words is "three hundred ninety-eight thousand, two hundred eighty-six".