13127840 has 48 divisors (see below), whose sum is σ = 33838560. Its totient is φ = 4773120.

The previous prime is 13127839. The next prime is 13127843. The reversal of 13127840 is 4872131.

It is not an unprimeable number, because it can be changed into a prime (13127843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1970 + ... + 5489.

It is an arithmetic number, because the mean of its divisors is an integer number (704970).

Almost surely, 2^13127840 is an apocalyptic number.

13127840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13127840 is an abundant number, since it is smaller than the sum of its proper divisors (20710720).

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

13127840 is a wasteful number, since it uses less digits than its factorization.

13127840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7485 (or 7477 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 13127840 is about 3623.2361225843. The cubic root of 13127840 is about 235.9017114408.

Adding to 13127840 its reverse (4872131), we get a palindrome (17999971).

The spelling of 13127840 in words is "thirteen million, one hundred twenty-seven thousand, eight hundred forty".