320243396 has 12 divisors (see below), whose sum is σ = 611373840. Its totient is φ = 145565160.

The previous prime is 320243393. The next prime is 320243401. The reversal of 320243396 is 693342023.

It is a super-2 number, since 2×320243396² = 205111665363225632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (320243393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3639086 + ... + 3639173.

It is an arithmetic number, because the mean of its divisors is an integer number (50947820).

Almost surely, 2^320243396 is an apocalyptic number.

It is an amenable number.

320243396 is a deficient number, since it is larger than the sum of its proper divisors (291130444).

320243396 is a wasteful number, since it uses less digits than its factorization.

320243396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7278274 (or 7278272 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 32.

The square root of 320243396 is about 17895.3456518727. The cubic root of 320243396 is about 684.1637519321.

The spelling of 320243396 in words is "three hundred twenty million, two hundred forty-three thousand, three hundred ninety-six".