320406998 has 8 divisors (see below), whose sum is σ = 487783992. Its totient is φ = 157812336.

The previous prime is 320406991. The next prime is 320407049. The reversal of 320406998 is 899604023.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320406991) by changing a digit.

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, 1195415 + ... + 1195682.

It is an arithmetic number, because the mean of its divisors is an integer number (60972999).

Almost surely, 2^320406998 is an apocalyptic number.

320406998 is a deficient number, since it is larger than the sum of its proper divisors (167376994).

320406998 is a wasteful number, since it uses less digits than its factorization.

320406998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2391166.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 320406998 is about 17899.9161450550. The cubic root of 320406998 is about 684.2802378138.

The spelling of 320406998 in words is "three hundred twenty million, four hundred six thousand, nine hundred ninety-eight".