328255421 has 8 divisors (see below), whose sum is σ = 361727520. Its totient is φ = 295957872.

The previous prime is 328255399. The next prime is 328255429. The reversal of 328255421 is 124552823.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 328255421 - 2⁶ = 328255357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328255429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 293051 + ... + 294168.

It is an arithmetic number, because the mean of its divisors is an integer number (45215940).

Almost surely, 2^328255421 is an apocalyptic number.

It is an amenable number.

328255421 is a deficient number, since it is larger than the sum of its proper divisors (33472099).

328255421 is a wasteful number, since it uses less digits than its factorization.

328255421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587275.

The product of its digits is 19200, while the sum is 32.

The square root of 328255421 is about 18117.8205366981. The cubic root of 328255421 is about 689.8224152667.

The spelling of 328255421 in words is "three hundred twenty-eight million, two hundred fifty-five thousand, four hundred twenty-one".