328691456 has 36 divisors (see below), whose sum is σ = 660207912. Its totient is φ = 163316736.

The previous prime is 328691453. The next prime is 328691477. The reversal of 328691456 is 654196823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328691453) 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, 37790 + ... + 45666.

Almost surely, 2^328691456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 328691456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330103956).

328691456 is an abundant number, since it is smaller than the sum of its proper divisors (331516456).

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

328691456 is an equidigital number, since it uses as much as digits as its factorization.

328691456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8056 (or 8042 counting only the distinct ones).

The product of its digits is 311040, while the sum is 44.

The square root of 328691456 is about 18129.8498614853. The cubic root of 328691456 is about 690.1277198287.

The spelling of 328691456 in words is "three hundred twenty-eight million, six hundred ninety-one thousand, four hundred fifty-six".