13527440 has 20 divisors (see below), whose sum is σ = 31451484. Its totient is φ = 5410944.

The previous prime is 13527433. The next prime is 13527457. The reversal of 13527440 is 4472531.

It can be written as a sum of positive squares in 2 ways, for example, as 1721344 + 11806096 = 1312^2 + 3436^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84467 + ... + 84626.

Almost surely, 2^13527440 is an apocalyptic number.

13527440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13527440 is an abundant number, since it is smaller than the sum of its proper divisors (17924044).

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

13527440 is a wasteful number, since it uses less digits than its factorization.

13527440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169106 (or 169100 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 13527440 is about 3677.9668296492. The cubic root of 13527440 is about 238.2713755955.

Adding to 13527440 its reverse (4472531), we get a palindrome (17999971).

The spelling of 13527440 in words is "thirteen million, five hundred twenty-seven thousand, four hundred forty".