328216772 has 24 divisors (see below), whose sum is σ = 620871552. Its totient is φ = 150919200.

The previous prime is 328216729. The next prime is 328216789. The reversal of 328216772 is 277612823.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2447 + ... + 25737.

It is an arithmetic number, because the mean of its divisors is an integer number (25869648).

Almost surely, 2^328216772 is an apocalyptic number.

It is an amenable number.

328216772 is a deficient number, since it is larger than the sum of its proper divisors (292654780).

328216772 is a wasteful number, since it uses less digits than its factorization.

328216772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23579 (or 23577 counting only the distinct ones).

The product of its digits is 56448, while the sum is 38.

The square root of 328216772 is about 18116.7539035005. The cubic root of 328216772 is about 689.7953408288.

It can be divided in two parts, 32821 and 6772, that added together give a palindrome (39593).

The spelling of 328216772 in words is "three hundred twenty-eight million, two hundred sixteen thousand, seven hundred seventy-two".