328457747 has 4 divisors (see below), whose sum is σ = 332615520. Its totient is φ = 324299976.

The previous prime is 328457743. The next prime is 328457777. The reversal of 328457747 is 747754823.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 328457747 - 2² = 328457743 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328457743) 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, 2078768 + ... + 2078925.

It is an arithmetic number, because the mean of its divisors is an integer number (83153880).

Almost surely, 2^328457747 is an apocalyptic number.

328457747 is a deficient number, since it is larger than the sum of its proper divisors (4157773).

328457747 is an equidigital number, since it uses as much as digits as its factorization.

328457747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4157772.

The product of its digits is 1317120, while the sum is 47.

The square root of 328457747 is about 18123.4032951871. The cubic root of 328457747 is about 689.9641142157.

The spelling of 328457747 in words is "three hundred twenty-eight million, four hundred fifty-seven thousand, seven hundred forty-seven".