398226 has 16 divisors (see below), whose sum is σ = 822528. Its totient is φ = 128400.

The previous prime is 398219. The next prime is 398227. The reversal of 398226 is 622893.

It is a d-powerful number, because it can be written as 3¹⁰ + 9⁵ + 2⁶ + 8² + 2⁶ + 6⁷ .

It is a junction number, because it is equal to n+sod(n) for n = 398193 and 398202.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 398226.

It is not an unprimeable number, because it can be changed into a prime (398227) by changing a digit.

398226 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 7 ways as a sum of consecutive naturals, for example, 885 + ... + 1256.

It is an arithmetic number, because the mean of its divisors is an integer number (51408).

2³⁹⁸²²⁶ is an apocalyptic number.

398226 is an abundant number, since it is smaller than the sum of its proper divisors (424302).

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

398226 is a wasteful number, since it uses less digits than its factorization.

398226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2177.

The product of its digits is 5184, while the sum is 30.

The square root of 398226 is about 631.0515034448. The cubic root of 398226 is about 73.5715440168.

The spelling of 398226 in words is "three hundred ninety-eight thousand, two hundred twenty-six".