329945280 has 224 divisors, whose sum is σ = 1230514176. Its totient is φ = 73322496.

The previous prime is 329945269. The next prime is 329945293. The reversal of 329945280 is 82549923.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 247977 + ... + 249303.

Almost surely, 2^329945280 is an apocalyptic number.

329945280 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 329945280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (615257088).

329945280 is an abundant number, since it is smaller than the sum of its proper divisors (900568896).

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

329945280 is a wasteful number, since it uses less digits than its factorization.

329945280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1391 (or 1381 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 329945280 is about 18164.3959437136. The cubic root of 329945280 is about 691.0041250959.

The spelling of 329945280 in words is "three hundred twenty-nine million, nine hundred forty-five thousand, two hundred eighty".