13215330 has 24 divisors (see below), whose sum is σ = 34360092. Its totient is φ = 3524064.

The previous prime is 13215313. The next prime is 13215337. The reversal of 13215330 is 3351231.

13215330 is a `hidden beast` number, since 132 + 1 + 533 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13198689 + 16641 = 3633^2 + 129^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13215337) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 73329 + ... + 73508.

Almost surely, 2^13215330 is an apocalyptic number.

13215330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13215330 is an abundant number, since it is smaller than the sum of its proper divisors (21144762).

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

13215330 is a wasteful number, since it uses less digits than its factorization.

13215330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146850 (or 146847 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 13215330 is about 3635.2895345488. The cubic root of 13215330 is about 236.4246042743.

Adding to 13215330 its reverse (3351231), we get a palindrome (16566561).

The spelling of 13215330 in words is "thirteen million, two hundred fifteen thousand, three hundred thirty".