13872006 has 16 divisors (see below), whose sum is σ = 30826800. Its totient is φ = 4623984.

The previous prime is 13871999. The next prime is 13872007. The reversal of 13872006 is 60027831.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13872007) 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 in 7 ways as a sum of consecutive naturals, for example, 128391 + ... + 128498.

It is an arithmetic number, because the mean of its divisors is an integer number (1926675).

Almost surely, 2^13872006 is an apocalyptic number.

13872006 is an abundant number, since it is smaller than the sum of its proper divisors (16954794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13872006 is a wasteful number, since it uses less digits than its factorization.

13872006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256900 (or 256894 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 13872006 is about 3724.5141965094. The cubic root of 13872006 is about 240.2774915365.

Adding to 13872006 its reverse (60027831), we get a palindrome (73899837).

The spelling of 13872006 in words is "thirteen million, eight hundred seventy-two thousand, six".