13871616 has 80 divisors (see below), whose sum is σ = 40363488. Its totient is φ = 4198400.

The previous prime is 13871593. The next prime is 13871617. The reversal of 13871616 is 61617831.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (13871617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16486 + ... + 17306.

Almost surely, 2^13871616 is an apocalyptic number.

13871616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13871616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20181744).

13871616 is an abundant number, since it is smaller than the sum of its proper divisors (26491872).

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

13871616 is an equidigital number, since it uses as much as digits as its factorization.

13871616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853 (or 837 counting only the distinct ones).

The product of its digits is 6048, while the sum is 33.

The square root of 13871616 is about 3724.4618403200. The cubic root of 13871616 is about 240.2752397810.

It can be divided in two parts, 1387 and 1616, that added together give a palindrome (3003).

The spelling of 13871616 in words is "thirteen million, eight hundred seventy-one thousand, six hundred sixteen".