320993396 has 18 divisors (see below), whose sum is σ = 564342870. Its totient is φ = 159755872.

The previous prime is 320993383. The next prime is 320993441. The reversal of 320993396 is 693399023.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 63840100 + 257153296 = 7990^2 + 16036^2 .

It is a super-2 number, since 2×320993396² = 206073520551225632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 288890 + ... + 289998.

Almost surely, 2^320993396 is an apocalyptic number.

It is an amenable number.

320993396 is a deficient number, since it is larger than the sum of its proper divisors (243349474).

320993396 is a wasteful number, since it uses less digits than its factorization.

320993396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1651 (or 1380 counting only the distinct ones).

The product of its (nonzero) digits is 236196, while the sum is 44.

The square root of 320993396 is about 17916.2885665531. The cubic root of 320993396 is about 684.6974322184.

The spelling of 320993396 in words is "three hundred twenty million, nine hundred ninety-three thousand, three hundred ninety-six".