13730944 has 16 divisors (see below), whose sum is σ = 27354870. Its totient is φ = 6865408.

The previous prime is 13730929. The next prime is 13730971. The reversal of 13730944 is 44903731.

It can be written as a sum of positive squares in only one way, i.e., 13601344 + 129600 = 3688^2 + 360^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×13730944² = 377077646262272, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53509 + ... + 53764.

Almost surely, 2^13730944 is an apocalyptic number.

It is an amenable number.

13730944 is a deficient number, since it is larger than the sum of its proper divisors (13623926).

13730944 is an equidigital number, since it uses as much as digits as its factorization.

13730944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107287 (or 107275 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 13730944 is about 3705.5288421493. The cubic root of 13730944 is about 239.4602685998.

The spelling of 13730944 in words is "thirteen million, seven hundred thirty thousand, nine hundred forty-four".