402198356 has 24 divisors (see below), whose sum is σ = 824018496. Its totient is φ = 168166080.

The previous prime is 402198343. The next prime is 402198367. The reversal of 402198356 is 653891204.

It is a happy number.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174026 + ... + 176321.

It is an arithmetic number, because the mean of its divisors is an integer number (34334104).

Almost surely, 2^402198356 is an apocalyptic number.

It is an amenable number.

402198356 is an abundant number, since it is smaller than the sum of its proper divisors (421820140).

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

402198356 is a wasteful number, since it uses less digits than its factorization.

402198356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350399 (or 350397 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 402198356 is about 20054.8835947756. The cubic root of 402198356 is about 738.1536365875.

The spelling of 402198356 in words is "four hundred two million, one hundred ninety-eight thousand, three hundred fifty-six".