320427266 has 16 divisors (see below), whose sum is σ = 491661240. Its totient is φ = 156574080.

The previous prime is 320427257. The next prime is 320427277. The reversal of 320427266 is 662724023.

It can be written as a sum of positive squares in 4 ways, for example, as 180123241 + 140304025 = 13421^2 + 11845^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10790 + ... + 27518.

Almost surely, 2^320427266 is an apocalyptic number.

320427266 is a deficient number, since it is larger than the sum of its proper divisors (171233974).

320427266 is a wasteful number, since it uses less digits than its factorization.

320427266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16949.

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 320427266 is about 17900.4822840056. The cubic root of 320427266 is about 684.2946660249.

The spelling of 320427266 in words is "three hundred twenty million, four hundred twenty-seven thousand, two hundred sixty-six".