13671870 has 64 divisors (see below), whose sum is σ = 34309440. Its totient is φ = 3483648.

The previous prime is 13671863. The next prime is 13671881. The reversal of 13671870 is 7817631.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 120934 + ... + 121046.

It is an arithmetic number, because the mean of its divisors is an integer number (536085).

Almost surely, 2^13671870 is an apocalyptic number.

13671870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13671870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17154720).

13671870 is an abundant number, since it is smaller than the sum of its proper divisors (20637570).

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

13671870 is a wasteful number, since it uses less digits than its factorization.

13671870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269.

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 13671870 is about 3697.5491883138. The cubic root of 13671870 is about 239.1163686971.

It can be divided in two parts, 13671 and 870, that added together give a palindrome (14541).

The spelling of 13671870 in words is "thirteen million, six hundred seventy-one thousand, eight hundred seventy".