13121384 has 32 divisors (see below), whose sum is σ = 25583880. Its totient is φ = 6303744.

The previous prime is 13121371. The next prime is 13121411. The reversal of 13121384 is 48312131.

It can be written as a sum of positive squares in 4 ways, for example, as 13118884 + 2500 = 3622^2 + 50^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28484 + ... + 28940.

Almost surely, 2^13121384 is an apocalyptic number.

It is an amenable number.

13121384 is a deficient number, since it is larger than the sum of its proper divisors (12462496).

13121384 is a wasteful number, since it uses less digits than its factorization.

13121384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597 (or 593 counting only the distinct ones).

The product of its digits is 576, while the sum is 23.

The square root of 13121384 is about 3622.3450967571. The cubic root of 13121384 is about 235.8630345735.

The spelling of 13121384 in words is "thirteen million, one hundred twenty-one thousand, three hundred eighty-four".