329281216 has 28 divisors (see below), whose sum is σ = 712820520. Its totient is φ = 149672960.

The previous prime is 329281213. The next prime is 329281217. The reversal of 329281216 is 612182923.

It is a super-2 number, since 2×329281216² = 216852238420877312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (329281213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233161 + ... + 234568.

Almost surely, 2^329281216 is an apocalyptic number.

It is an amenable number.

329281216 is an abundant number, since it is smaller than the sum of its proper divisors (383539304).

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

329281216 is a wasteful number, since it uses less digits than its factorization.

329281216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467752 (or 467742 counting only the distinct ones).

The product of its digits is 10368, while the sum is 34.

The square root of 329281216 is about 18146.1074613814. The cubic root of 329281216 is about 690.5402308438.

The spelling of 329281216 in words is "three hundred twenty-nine million, two hundred eighty-one thousand, two hundred sixteen".