13201540 has 48 divisors (see below), whose sum is σ = 31570560. Its totient is φ = 4590080.

The previous prime is 13201511. The next prime is 13201541. The reversal of 13201540 is 4510231.

It is not an unprimeable number, because it can be changed into a prime (13201541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3756 + ... + 6364.

It is an arithmetic number, because the mean of its divisors is an integer number (657720).

Almost surely, 2^13201540 is an apocalyptic number.

13201540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13201540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15785280).

13201540 is an abundant number, since it is smaller than the sum of its proper divisors (18369020).

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

13201540 is a wasteful number, since it uses less digits than its factorization.

13201540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2652 (or 2650 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 13201540 is about 3633.3923542607. The cubic root of 13201540 is about 236.3423404697.

Adding to 13201540 its reverse (4510231), we get a palindrome (17711771).

The spelling of 13201540 in words is "thirteen million, two hundred one thousand, five hundred forty".