13511968 has 12 divisors (see below), whose sum is σ = 26601750. Its totient is φ = 6755968.

The previous prime is 13511963. The next prime is 13511969. The reversal of 13511968 is 86911531.

It can be written as a sum of positive squares in only one way, i.e., 12194064 + 1317904 = 3492^2 + 1148^2 .

It is not an unprimeable number, because it can be changed into a prime (13511963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211093 + ... + 211156.

Almost surely, 2^13511968 is an apocalyptic number.

It is an amenable number.

13511968 is a deficient number, since it is larger than the sum of its proper divisors (13089782).

13511968 is an equidigital number, since it uses as much as digits as its factorization.

13511968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422259 (or 422251 counting only the distinct ones).

The product of its digits is 6480, while the sum is 34.

The square root of 13511968 is about 3675.8628918935. The cubic root of 13511968 is about 238.1805000342.

The spelling of 13511968 in words is "thirteen million, five hundred eleven thousand, nine hundred sixty-eight".