320153998 has 8 divisors (see below), whose sum is σ = 481615992. Its totient is φ = 159615336.

The previous prime is 320153987. The next prime is 320154011. The reversal of 320153998 is 899351023.

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

It is a self number, because there is not a number n which added to its sum of digits gives 320153998.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229965 + ... + 231352.

It is an arithmetic number, because the mean of its divisors is an integer number (60201999).

Almost surely, 2^320153998 is an apocalyptic number.

320153998 is a deficient number, since it is larger than the sum of its proper divisors (161461994).

320153998 is a wasteful number, since it uses less digits than its factorization.

320153998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461666.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 320153998 is about 17892.8476772145. The cubic root of 320153998 is about 684.1000831060.

The spelling of 320153998 in words is "three hundred twenty million, one hundred fifty-three thousand, nine hundred ninety-eight".