329747240 has 16 divisors (see below), whose sum is σ = 741931380. Its totient is φ = 131898880.

The previous prime is 329747239. The next prime is 329747311. The reversal of 329747240 is 42747923.

It can be written as a sum of positive squares in 2 ways, for example, as 270734116 + 59013124 = 16454^2 + 7682^2 .

It is a junction number, because it is equal to n+sod(n) for n = 329747194 and 329747203.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4121801 + ... + 4121880.

Almost surely, 2^329747240 is an apocalyptic number.

It is an amenable number.

329747240 is an abundant number, since it is smaller than the sum of its proper divisors (412184140).

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

329747240 is a wasteful number, since it uses less digits than its factorization.

329747240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8243692 (or 8243688 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 329747240 is about 18158.9438018845. The cubic root of 329747240 is about 690.8658457571.

The spelling of 329747240 in words is "three hundred twenty-nine million, seven hundred forty-seven thousand, two hundred forty".