13649044 has 12 divisors (see below), whose sum is σ = 24098004. Its totient is φ = 6763904.

The previous prime is 13649033. The next prime is 13649047. The reversal of 13649044 is 44094631.

It can be written as a sum of positive squares in 2 ways, for example, as 1468944 + 12180100 = 1212^2 + 3490^2 .

It is a super-2 number, since 2×13649044² = 372592804227872, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13648997 and 13649015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13649047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14647 + ... + 15550.

It is an arithmetic number, because the mean of its divisors is an integer number (2008167).

Almost surely, 2^13649044 is an apocalyptic number.

It is an amenable number.

13649044 is a deficient number, since it is larger than the sum of its proper divisors (10448960).

13649044 is a wasteful number, since it uses less digits than its factorization.

13649044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30314 (or 30312 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 13649044 is about 3694.4612597779. The cubic root of 13649044 is about 238.9832215715.

The spelling of 13649044 in words is "thirteen million, six hundred forty-nine thousand, forty-four".