13061540 has 24 divisors (see below), whose sum is σ = 28315392. Its totient is φ = 5055840.

The previous prime is 13061527. The next prime is 13061561. The reversal of 13061540 is 4516031.

13061540 is digitally balanced in base 2, because in such base 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 (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9914 + ... + 11153.

It is an arithmetic number, because the mean of its divisors is an integer number (1179808).

Almost surely, 2^13061540 is an apocalyptic number.

13061540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13061540 is an abundant number, since it is smaller than the sum of its proper divisors (15253852).

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

13061540 is a wasteful number, since it uses less digits than its factorization.

13061540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21107 (or 21105 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 13061540 is about 3614.0752620830. The cubic root of 13061540 is about 235.5039133985.

Adding to 13061540 its reverse (4516031), we get a palindrome (17577571).

The spelling of 13061540 in words is "thirteen million, sixty-one thousand, five hundred forty".