328455281 has 12 divisors (see below), whose sum is σ = 416815920. Its totient is φ = 255938760.

The previous prime is 328455277. The next prime is 328455287. The reversal of 328455281 is 182554823.

It is not a de Polignac number, because 328455281 - 2² = 328455277 is a prime.

It is a super-2 number, since 2×328455281² = 215765743233577922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (328455287) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 304151 + ... + 305228.

It is an arithmetic number, because the mean of its divisors is an integer number (34734660).

Almost surely, 2^328455281 is an apocalyptic number.

It is an amenable number.

328455281 is a deficient number, since it is larger than the sum of its proper divisors (88360639).

328455281 is a wasteful number, since it uses less digits than its factorization.

328455281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609404 (or 609397 counting only the distinct ones).

The product of its digits is 76800, while the sum is 38.

The square root of 328455281 is about 18123.3352614799. The cubic root of 328455281 is about 689.9623875038.

The spelling of 328455281 in words is "three hundred twenty-eight million, four hundred fifty-five thousand, two hundred eighty-one".