328606421 has 16 divisors (see below), whose sum is σ = 386852928. Its totient is φ = 275184000.

The previous prime is 328606403. The next prime is 328606433. The reversal of 328606421 is 124606823.

It is not a de Polignac number, because 328606421 - 2⁶ = 328606357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328606721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76121 + ... + 80321.

It is an arithmetic number, because the mean of its divisors is an integer number (24178308).

Almost surely, 2^328606421 is an apocalyptic number.

It is an amenable number.

328606421 is a deficient number, since it is larger than the sum of its proper divisors (58246507).

328606421 is a wasteful number, since it uses less digits than its factorization.

328606421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4772.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 328606421 is about 18127.5045442002. The cubic root of 328606421 is about 690.0682009181.

The spelling of 328606421 in words is "three hundred twenty-eight million, six hundred six thousand, four hundred twenty-one".