328443146 has 4 divisors (see below), whose sum is σ = 492664722. Its totient is φ = 164221572.

The previous prime is 328443127. The next prime is 328443149. The reversal of 328443146 is 641344823.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 641344823 = 7 ⋅91620689.

It can be written as a sum of positive squares in only one way, i.e., 196308121 + 132135025 = 14011^2 + 11495^2 .

It is not an unprimeable number, because it can be changed into a prime (328443149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82110785 + ... + 82110788.

Almost surely, 2^328443146 is an apocalyptic number.

328443146 is a deficient number, since it is larger than the sum of its proper divisors (164221576).

328443146 is a wasteful number, since it uses less digits than its factorization.

328443146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164221575.

The product of its digits is 55296, while the sum is 35.

The square root of 328443146 is about 18123.0004690173. Note that the first 3 decimals coincide. The cubic root of 328443146 is about 689.9538903585.

Adding to 328443146 its reverse (641344823), we get a palindrome (969787969).

The spelling of 328443146 in words is "three hundred twenty-eight million, four hundred forty-three thousand, one hundred forty-six".