13156424 has 16 divisors (see below), whose sum is σ = 24799020. Its totient is φ = 6543360.

The previous prime is 13156421. The next prime is 13156439. The reversal of 13156424 is 42465131.

It can be written as a sum of positive squares in 2 ways, for example, as 12888100 + 268324 = 3590^2 + 518^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13156393 and 13156402.

It is not an unprimeable number, because it can be changed into a prime (13156421) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 2717 + ... + 5804.

Almost surely, 2^13156424 is an apocalyptic number.

It is an amenable number.

13156424 is a deficient number, since it is larger than the sum of its proper divisors (11642596).

13156424 is a wasteful number, since it uses less digits than its factorization.

13156424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8720 (or 8716 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 13156424 is about 3627.1785178014. The cubic root of 13156424 is about 236.0728014410.

The spelling of 13156424 in words is "thirteen million, one hundred fifty-six thousand, four hundred twenty-four".