328145487 has 4 divisors (see below), whose sum is σ = 437527320. Its totient is φ = 218763656.

The previous prime is 328145479. The next prime is 328145491. The reversal of 328145487 is 784541823.

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 328145487 - 2³ = 328145479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328145417) 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, 54690912 + ... + 54690917.

It is an arithmetic number, because the mean of its divisors is an integer number (109381830).

Almost surely, 2^328145487 is an apocalyptic number.

328145487 is a deficient number, since it is larger than the sum of its proper divisors (109381833).

328145487 is a wasteful number, since it uses less digits than its factorization.

328145487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109381832.

The product of its digits is 215040, while the sum is 42.

The square root of 328145487 is about 18114.7864188348. The cubic root of 328145487 is about 689.7453986104.

The spelling of 328145487 in words is "three hundred twenty-eight million, one hundred forty-five thousand, four hundred eighty-seven".