320406198 has 48 divisors (see below), whose sum is σ = 755696880. Its totient is φ = 90284544.

The previous prime is 320406193. The next prime is 320406209. The reversal of 320406198 is 891604023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320406193) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13998 + ... + 28926.

It is an arithmetic number, because the mean of its divisors is an integer number (15743685).

Almost surely, 2^320406198 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320406198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (377848440).

320406198 is an abundant number, since it is smaller than the sum of its proper divisors (435290682).

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

320406198 is a wasteful number, since it uses less digits than its factorization.

320406198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15021 (or 15014 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 320406198 is about 17899.8937985676. The cubic root of 320406198 is about 684.2796683041.

The spelling of 320406198 in words is "three hundred twenty million, four hundred six thousand, one hundred ninety-eight".