198426 has 8 divisors (see below), whose sum is σ = 396864. Its totient is φ = 66140.

The previous prime is 198413. The next prime is 198427. The reversal of 198426 is 624891.

It is a sphenic number, since it is the product of 3 distinct primes.

198426 is an admirable number.

It is a d-powerful number, because it can be written as 1 + 9 + 4⁸ + 8³ + 2¹⁷ + 6⁴ .

It is a junction number, because it is equal to n+sod(n) for n = 198393 and 198402.

It is not an unprimeable number, because it can be changed into a prime (198427) by changing a digit.

198426 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 3 ways as a sum of consecutive naturals, for example, 16530 + ... + 16541.

It is an arithmetic number, because the mean of its divisors is an integer number (49608).

2¹⁹⁸⁴²⁶ is an apocalyptic number.

198426 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

198426 is a wasteful number, since it uses less digits than its factorization.

198426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33076.

The product of its digits is 3456, while the sum is 30.

The square root of 198426 is about 445.4503339319. The cubic root of 198426 is about 58.3265370767.

It can be divided in two parts, 198 and 426, that multiplied together give a palindrome (84348).

The spelling of 198426 in words is "one hundred ninety-eight thousand, four hundred twenty-six".