320257460 has 12 divisors (see below), whose sum is σ = 672540708. Its totient is φ = 128102976.

The previous prime is 320257453. The next prime is 320257463. The reversal of 320257460 is 64752023.

It can be written as a sum of positive squares in 2 ways, for example, as 243484816 + 76772644 = 15604^2 + 8762^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320257463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8006417 + ... + 8006456.

It is an arithmetic number, because the mean of its divisors is an integer number (56045059).

Almost surely, 2^320257460 is an apocalyptic number.

It is an amenable number.

320257460 is an abundant number, since it is smaller than the sum of its proper divisors (352283248).

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

320257460 is a wasteful number, since it uses less digits than its factorization.

320257460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16012882 (or 16012880 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 320257460 is about 17895.7385988955. The cubic root of 320257460 is about 684.1737671666.

The spelling of 320257460 in words is "three hundred twenty million, two hundred fifty-seven thousand, four hundred sixty".