330665280 has 224 divisors, whose sum is σ = 1158288768. Its totient is φ = 79257600.

The previous prime is 330665267. The next prime is 330665281. The reversal of 330665280 is 82566033.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (330665281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1826790 + ... + 1826970.

It is an arithmetic number, because the mean of its divisors is an integer number (5170932).

Almost surely, 2^330665280 is an apocalyptic number.

330665280 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 330665280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (579144384).

330665280 is an abundant number, since it is smaller than the sum of its proper divisors (827623488).

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

330665280 is a wasteful number, since it uses less digits than its factorization.

330665280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385 (or 375 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 330665280 is about 18184.2041343579. The cubic root of 330665280 is about 691.5063917276.

It can be divided in two parts, 3306 and 65280, that added together give a palindrome (68586).

The spelling of 330665280 in words is "three hundred thirty million, six hundred sixty-five thousand, two hundred eighty".