13328530 has 8 divisors (see below), whose sum is σ = 23991372. Its totient is φ = 5331408.

The previous prime is 13328521. The next prime is 13328537. The reversal of 13328530 is 3582331.

It can be written as a sum of positive squares in 2 ways, for example, as 12981609 + 346921 = 3603^2 + 589^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 13328495 and 13328504.

It is not an unprimeable number, because it can be changed into a prime (13328537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 666417 + ... + 666436.

Almost surely, 2^13328530 is an apocalyptic number.

13328530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13328530 is a deficient number, since it is larger than the sum of its proper divisors (10662842).

13328530 is a wasteful number, since it uses less digits than its factorization.

13328530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332860.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 13328530 is about 3650.8259339497. The cubic root of 13328530 is about 237.0977419723.

The spelling of 13328530 in words is "thirteen million, three hundred twenty-eight thousand, five hundred thirty".