13991048 has 8 divisors (see below), whose sum is σ = 26233230. Its totient is φ = 6995520.

The previous prime is 13991041. The next prime is 13991053. The reversal of 13991048 is 84019931.

13991048 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 13675204 + 315844 = 3698^2 + 562^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 13990999 and 13991017.

It is not an unprimeable number, because it can be changed into a prime (13991041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 874433 + ... + 874448.

Almost surely, 2^13991048 is an apocalyptic number.

It is an amenable number.

13991048 is a deficient number, since it is larger than the sum of its proper divisors (12242182).

13991048 is a wasteful number, since it uses less digits than its factorization.

13991048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1748887 (or 1748883 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 13991048 is about 3740.4609341631. The cubic root of 13991048 is about 240.9628450036.

The spelling of 13991048 in words is "thirteen million, nine hundred ninety-one thousand, forty-eight".