320288045 has 16 divisors (see below), whose sum is σ = 479184768. Its totient is φ = 199659840.

The previous prime is 320287967. The next prime is 320288051. The reversal of 320288045 is 540882023.

It is not a de Polignac number, because 320288045 - 2¹² = 320283949 is a prime.

It is a Duffinian number.

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, 415574 + ... + 416343.

It is an arithmetic number, because the mean of its divisors is an integer number (29949048).

Almost surely, 2^320288045 is an apocalyptic number.

320288045 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

320288045 is a deficient number, since it is larger than the sum of its proper divisors (158896723).

320288045 is a wasteful number, since it uses less digits than its factorization.

320288045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831940.

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 320288045 is about 17896.5931115394. The cubic root of 320288045 is about 684.1955462987.

The spelling of 320288045 in words is "three hundred twenty million, two hundred eighty-eight thousand, forty-five".