13320524 has 24 divisors (see below), whose sum is σ = 26751648. Its totient is φ = 5685120.

The previous prime is 13320521. The next prime is 13320533. The reversal of 13320524 is 42502331.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 13320496 and 13320505.

It is not an unprimeable number, because it can be changed into a prime (13320521) 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, 7022 + ... + 8714.

It is an arithmetic number, because the mean of its divisors is an integer number (1114652).

Almost surely, 2^13320524 is an apocalyptic number.

13320524 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13320524 is an abundant number, since it is smaller than the sum of its proper divisors (13431124).

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

13320524 is a wasteful number, since it uses less digits than its factorization.

13320524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1985 (or 1983 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 13320524 is about 3649.7293050307. The cubic root of 13320524 is about 237.0502602493.

Adding to 13320524 its reverse (42502331), we get a palindrome (55822855).

The spelling of 13320524 in words is "thirteen million, three hundred twenty thousand, five hundred twenty-four".