328491420 has 24 divisors (see below), whose sum is σ = 919776144. Its totient is φ = 87597696.

The previous prime is 328491389. The next prime is 328491421. The reversal of 328491420 is 24194823.

328491420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×328491420² = 215813226027232800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328491421) 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 in 7 ways as a sum of consecutive naturals, for example, 2737369 + ... + 2737488.

It is an arithmetic number, because the mean of its divisors is an integer number (38324006).

Almost surely, 2^328491420 is an apocalyptic number.

328491420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

328491420 is an abundant number, since it is smaller than the sum of its proper divisors (591284724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

328491420 is a wasteful number, since it uses less digits than its factorization.

328491420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5474869 (or 5474867 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 328491420 is about 18124.3322635622. The cubic root of 328491420 is about 689.9876914419.

The spelling of 328491420 in words is "three hundred twenty-eight million, four hundred ninety-one thousand, four hundred twenty".