328021776 has 60 divisors (see below), whose sum is σ = 966329520. Its totient is φ = 103584960.

The previous prime is 328021763. The next prime is 328021781. The reversal of 328021776 is 677120823.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 328021776.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 57210 + ... + 62681.

It is an arithmetic number, because the mean of its divisors is an integer number (16105492).

Almost surely, 2^328021776 is an apocalyptic number.

328021776 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

328021776 is an abundant number, since it is smaller than the sum of its proper divisors (638307744).

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

328021776 is a wasteful number, since it uses less digits than its factorization.

328021776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119924 (or 119915 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 328021776 is about 18111.3714555248. The cubic root of 328021776 is about 689.6587096044.

The spelling of 328021776 in words is "three hundred twenty-eight million, twenty-one thousand, seven hundred seventy-six".