13387424 has 12 divisors (see below), whose sum is σ = 26356554. Its totient is φ = 6693696.

The previous prime is 13387421. The next prime is 13387427. The reversal of 13387424 is 42478331.

It is an interprime number because it is at equal distance from previous prime (13387421) and next prime (13387427).

It can be written as a sum of positive squares in only one way, i.e., 13104400 + 283024 = 3620^2 + 532^2 .

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 418357 = 13387424 / (1 + 3 + 3 + 8 + 7 + 4 + 2 + 4).

It is not an unprimeable number, because it can be changed into a prime (13387421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209147 + ... + 209210.

Almost surely, 2^13387424 is an apocalyptic number.

It is an amenable number.

13387424 is a deficient number, since it is larger than the sum of its proper divisors (12969130).

13387424 is an equidigital number, since it uses as much as digits as its factorization.

13387424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418367 (or 418359 counting only the distinct ones).

The product of its digits is 16128, while the sum is 32.

The square root of 13387424 is about 3658.8828896263. The cubic root of 13387424 is about 237.4464455425.

The spelling of 13387424 in words is "thirteen million, three hundred eighty-seven thousand, four hundred twenty-four".