328121340 has 24 divisors (see below), whose sum is σ = 918739920. Its totient is φ = 87499008.

The previous prime is 328121323. The next prime is 328121351. The reversal of 328121340 is 43121823.

It is a super-2 number, since 2×328121340² = 215327227526791200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 328121340.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2734285 + ... + 2734404.

It is an arithmetic number, because the mean of its divisors is an integer number (38280830).

Almost surely, 2^328121340 is an apocalyptic number.

328121340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

328121340 is an abundant number, since it is smaller than the sum of its proper divisors (590618580).

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

328121340 is a wasteful number, since it uses less digits than its factorization.

328121340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5468701 (or 5468699 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 328121340 is about 18114.1199068572. The cubic root of 328121340 is about 689.7284796000.

The spelling of 328121340 in words is "three hundred twenty-eight million, one hundred twenty-one thousand, three hundred forty".