320448090 has 16 divisors (see below), whose sum is σ = 769075488. Its totient is φ = 85452816.

The previous prime is 320448059. The next prime is 320448103. The reversal of 320448090 is 90844023.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 10681603 = 320448090 / (3 + 2 + 0 + 4 + 4 + 8 + 0 + 9 + 0).

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, 5340772 + ... + 5340831.

It is an arithmetic number, because the mean of its divisors is an integer number (48067218).

Almost surely, 2^320448090 is an apocalyptic number.

320448090 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

320448090 is an abundant number, since it is smaller than the sum of its proper divisors (448627398).

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

320448090 is a wasteful number, since it uses less digits than its factorization.

320448090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10681613.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 320448090 is about 17901.0639348615. The cubic root of 320448090 is about 684.3094894029.

The spelling of 320448090 in words is "three hundred twenty million, four hundred forty-eight thousand, ninety".