320402245 has 8 divisors (see below), whose sum is σ = 393424416. Its totient is φ = 250360656.

The previous prime is 320402233. The next prime is 320402293. The reversal of 320402245 is 542204023.

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

It is a cyclic number.

It is not a de Polignac number, because 320402245 - 2⁹ = 320401733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 744907 + ... + 745336.

It is an arithmetic number, because the mean of its divisors is an integer number (49178052).

Almost surely, 2^320402245 is an apocalyptic number.

It is an amenable number.

320402245 is a deficient number, since it is larger than the sum of its proper divisors (73022171).

320402245 is a wasteful number, since it uses less digits than its factorization.

320402245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490291.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 320402245 is about 17899.7833785775. The cubic root of 320402245 is about 684.2768542006.

Adding to 320402245 its reverse (542204023), we get a palindrome (862606268).

The spelling of 320402245 in words is "three hundred twenty million, four hundred two thousand, two hundred forty-five".