13245540 has 192 divisors, whose sum is σ = 47996928. Its totient is φ = 2649600.

The previous prime is 13245517. The next prime is 13245553. The reversal of 13245540 is 4554231.

It is a self number, because there is not a number n which added to its sum of digits gives 13245540.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 217110 + ... + 217170.

It is an arithmetic number, because the mean of its divisors is an integer number (249984).

Almost surely, 2^13245540 is an apocalyptic number.

13245540 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 13245540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23998464).

13245540 is an abundant number, since it is smaller than the sum of its proper divisors (34751388).

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

13245540 is a wasteful number, since it uses less digits than its factorization.

13245540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 13245540 is about 3639.4422649631. The cubic root of 13245540 is about 236.6046212632.

Adding to 13245540 its reverse (4554231), we get a palindrome (17799771).

The spelling of 13245540 in words is "thirteen million, two hundred forty-five thousand, five hundred forty".