328959972 has 144 divisors (see below), whose sum is σ = 948240384. Its totient is φ = 95256000.

The previous prime is 328959907. The next prime is 328959989. The reversal of 328959972 is 279959823.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1558947 + ... + 1559157.

Almost surely, 2^328959972 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 328959972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (474120192).

328959972 is an abundant number, since it is smaller than the sum of its proper divisors (619280412).

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

328959972 is a wasteful number, since it uses less digits than its factorization.

328959972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390 (or 385 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 54.

The square root of 328959972 is about 18137.2537061155. The cubic root of 328959972 is about 690.3155960196.

The spelling of 328959972 in words is "three hundred twenty-eight million, nine hundred fifty-nine thousand, nine hundred seventy-two".