13871572 has 24 divisors (see below), whose sum is σ = 28520352. Its totient is φ = 5820000.

The previous prime is 13871551. The next prime is 13871573. The reversal of 13871572 is 27517831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13871573) 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, 11554 + ... + 12697.

It is an arithmetic number, because the mean of its divisors is an integer number (1188348).

Almost surely, 2^13871572 is an apocalyptic number.

It is an amenable number.

13871572 is an abundant number, since it is smaller than the sum of its proper divisors (14648780).

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

13871572 is a wasteful number, since it uses less digits than its factorization.

13871572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24279 (or 24277 counting only the distinct ones).

The product of its digits is 11760, while the sum is 34.

The square root of 13871572 is about 3724.4559334217. The cubic root of 13871572 is about 240.2749857341.

The spelling of 13871572 in words is "thirteen million, eight hundred seventy-one thousand, five hundred seventy-two".