320196990 has 32 divisors (see below), whose sum is σ = 772778880. Its totient is φ = 84907424.

The previous prime is 320196979. The next prime is 320197019. The reversal of 320196990 is 99691023.

It is a happy number.

320196990 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×320196990² = 205052224810120200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24444 + ... + 35183.

It is an arithmetic number, because the mean of its divisors is an integer number (24149340).

Almost surely, 2^320196990 is an apocalyptic number.

320196990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

320196990 is an abundant number, since it is smaller than the sum of its proper divisors (452581890).

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

320196990 is a wasteful number, since it uses less digits than its factorization.

320196990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59816.

The product of its (nonzero) digits is 26244, while the sum is 39.

The square root of 320196990 is about 17894.0490107745. The cubic root of 320196990 is about 684.1307032810.

The spelling of 320196990 in words is "three hundred twenty million, one hundred ninety-six thousand, nine hundred ninety".