13321530 has 32 divisors (see below), whose sum is σ = 35524800. Its totient is φ = 3552336.

The previous prime is 13321513. The next prime is 13321559. The reversal of 13321530 is 3512331.

13321530 is a `hidden beast` number, since 133 + 2 + 1 + 530 = 666.

13321530 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24400 + ... + 24939.

It is an arithmetic number, because the mean of its divisors is an integer number (1110150).

Almost surely, 2^13321530 is an apocalyptic number.

13321530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13321530 is an abundant number, since it is smaller than the sum of its proper divisors (22203270).

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

13321530 is a wasteful number, since it uses less digits than its factorization.

13321530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49355 (or 49349 counting only the distinct ones).

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

The square root of 13321530 is about 3649.8671208689. The cubic root of 13321530 is about 237.0562276461.

Adding to 13321530 its reverse (3512331), we get a palindrome (16833861).

The spelling of 13321530 in words is "thirteen million, three hundred twenty-one thousand, five hundred thirty".