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330 = 23511
BaseRepresentation
bin101001010
3110020
411022
52310
61310
7651
oct512
9406
10330
11280
12236
131c5
14198
15170
hex14a

330 has 16 divisors (see below), whose sum is σ = 864. Its totient is φ = 80.

The previous prime is 317. The next prime is 331. The reversal of 330 is 33.

Adding to 330 its reverse (33), we get a palindrome (363).

It can be divided in two parts, 3 and 30, that added together give a palindrome (33).

330 = 62 + 72 + ... + 102.

330 is a nontrivial binomial coefficient, being equal to C(11, 4).

330 is a Gilda number.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

330 is an idoneal number.

It is a Curzon number.

It is a plaindrome in base 12 and base 16.

It is a nialpdrome in base 7 and base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25 + ... + 35.

It is an arithmetic number, because the mean of its divisors is an integer number (54).

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

330 is the 15-th pentagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (432).

330 is an abundant number, since it is smaller than the sum of its proper divisors (534).

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

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

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

The sum of its prime factors is 21.

The product of its (nonzero) digits is 9, while the sum is 6.

The square root of 330 is about 18.1659021246. The cubic root of 330 is about 6.9104232300.

The spelling of 330 in words is "three hundred thirty", and thus it is an aban number and an oban number.

Divisors: 1 2 3 5 6 10 11 15 22 30 33 55 66 110 165 330