13870156 has 6 divisors (see below), whose sum is σ = 24272780. Its totient is φ = 6935076.

The previous prime is 13870151. The next prime is 13870169. The reversal of 13870156 is 65107831.

It is not an unprimeable number, because it can be changed into a prime (13870151) by changing a digit.

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 as a sum of consecutive naturals, namely, 1733766 + ... + 1733773.

Almost surely, 2^13870156 is an apocalyptic number.

It is an amenable number.

13870156 is a deficient number, since it is larger than the sum of its proper divisors (10402624).

13870156 is a wasteful number, since it uses less digits than its factorization.

13870156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3467543 (or 3467541 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 13870156 is about 3724.2658336913. The cubic root of 13870156 is about 240.2668097572.

Adding to 13870156 its reverse (65107831), we get a palindrome (78977987).

The spelling of 13870156 in words is "thirteen million, eight hundred seventy thousand, one hundred fifty-six".