320229018 has 16 divisors (see below), whose sum is σ = 711620160. Its totient is φ = 106742988.

The previous prime is 320229011. The next prime is 320229061. The reversal of 320229018 is 810922023.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 320228982 and 320229000.

It is not an unprimeable number, because it can be changed into a prime (320229011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2965030 + ... + 2965137.

It is an arithmetic number, because the mean of its divisors is an integer number (44476260).

Almost surely, 2^320229018 is an apocalyptic number.

320229018 is an abundant number, since it is smaller than the sum of its proper divisors (391391142).

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

320229018 is a wasteful number, since it uses less digits than its factorization.

320229018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5930178 (or 5930172 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 320229018 is about 17894.9439227956. The cubic root of 320229018 is about 684.1535127893.

The spelling of 320229018 in words is "three hundred twenty million, two hundred twenty-nine thousand, eighteen".