328264731 has 40 divisors (see below), whose sum is σ = 503118000. Its totient is φ = 213226560.

The previous prime is 328264711. The next prime is 328264757. The reversal of 328264731 is 137462823.

It is a happy number.

328264731 is a `hidden beast` number, since 3 + 2 + 8 + 2 + 647 + 3 + 1 = 666.

It is not a de Polignac number, because 328264731 - 2⁹ = 328264219 is a prime.

It is a super-2 number, since 2×328264731² = 215515467237004722, which contains 22 as substring.

Its product of digits (48384) is a multiple of the sum of its prime divisors (672).

It is not an unprimeable number, because it can be changed into a prime (328264711) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 711841 + ... + 712301.

It is an arithmetic number, because the mean of its divisors is an integer number (12577950).

Almost surely, 2^328264731 is an apocalyptic number.

328264731 is a deficient number, since it is larger than the sum of its proper divisors (174853269).

328264731 is a wasteful number, since it uses less digits than its factorization.

328264731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681 (or 672 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 328264731 is about 18118.0774642344. The cubic root of 328264731 is about 689.8289368000.

The spelling of 328264731 in words is "three hundred twenty-eight million, two hundred sixty-four thousand, seven hundred thirty-one".