13729648 has 10 divisors (see below), whose sum is σ = 26601224. Its totient is φ = 6864816.

The previous prime is 13729633. The next prime is 13729649. The reversal of 13729648 is 84692731.

It is a self number, because there is not a number n which added to its sum of digits gives 13729648.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13729649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429036 + ... + 429067.

Almost surely, 2^13729648 is an apocalyptic number.

It is an amenable number.

13729648 is a deficient number, since it is larger than the sum of its proper divisors (12871576).

13729648 is an equidigital number, since it uses as much as digits as its factorization.

13729648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858111 (or 858105 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 13729648 is about 3705.3539641983. The cubic root of 13729648 is about 239.4527345154.

The spelling of 13729648 in words is "thirteen million, seven hundred twenty-nine thousand, six hundred forty-eight".