13509996 has 12 divisors (see below), whose sum is σ = 31523352. Its totient is φ = 4503328.

The previous prime is 13509989. The next prime is 13510001. The reversal of 13509996 is 69990531.

13509996 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 562905 + ... + 562928.

It is an arithmetic number, because the mean of its divisors is an integer number (2626946).

Almost surely, 2^13509996 is an apocalyptic number.

It is an amenable number.

13509996 is an abundant number, since it is smaller than the sum of its proper divisors (18013356).

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

13509996 is a wasteful number, since it uses less digits than its factorization.

13509996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125840 (or 1125838 counting only the distinct ones).

The product of its (nonzero) digits is 65610, while the sum is 42.

The square root of 13509996 is about 3675.5946457682. The cubic root of 13509996 is about 238.1689124106.

The spelling of 13509996 in words is "thirteen million, five hundred nine thousand, nine hundred ninety-six".