402198 has 8 divisors (see below), whose sum is σ = 804408. Its totient is φ = 134064.

The previous prime is 402197. The next prime is 402221. The reversal of 402198 is 891204.

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

402198 is an admirable number.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33511 + ... + 33522.

It is an arithmetic number, because the mean of its divisors is an integer number (100551).

2⁴⁰²¹⁹⁸ is an apocalyptic number.

402198 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.

402198 is a wasteful number, since it uses less digits than its factorization.

402198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67038.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 402198 is about 634.1908230178. The cubic root of 402198 is about 73.8153418799.

The spelling of 402198 in words is "four hundred two thousand, one hundred ninety-eight".