13307738 has 4 divisors (see below), whose sum is σ = 19961610. Its totient is φ = 6653868.

The previous prime is 13307737. The next prime is 13307761. The reversal of 13307738 is 83770331.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12623809 + 683929 = 3553^2 + 827^2 .

It is not an unprimeable number, because it can be changed into a prime (13307737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3326933 + ... + 3326936.

Almost surely, 2^13307738 is an apocalyptic number.

13307738 is a deficient number, since it is larger than the sum of its proper divisors (6653872).

13307738 is an equidigital number, since it uses as much as digits as its factorization.

13307738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6653871.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 13307738 is about 3647.9772477361. The cubic root of 13307738 is about 236.9743899879.

The spelling of 13307738 in words is "thirteen million, three hundred seven thousand, seven hundred thirty-eight".