13621116 has 12 divisors (see below), whose sum is σ = 31782632. Its totient is φ = 4540368.

The previous prime is 13621109. The next prime is 13621123. The reversal of 13621116 is 61112631.

It is an interprime number because it is at equal distance from previous prime (13621109) and next prime (13621123).

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 13621092 and 13621101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 567535 + ... + 567558.

Almost surely, 2^13621116 is an apocalyptic number.

It is an amenable number.

13621116 is an abundant number, since it is smaller than the sum of its proper divisors (18161516).

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

13621116 is a wasteful number, since it uses less digits than its factorization.

13621116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135100 (or 1135098 counting only the distinct ones).

The product of its digits is 216, while the sum is 21.

The square root of 13621116 is about 3690.6796122124. The cubic root of 13621116 is about 238.8201117152.

Adding to 13621116 its reverse (61112631), we get a palindrome (74733747).

The spelling of 13621116 in words is "thirteen million, six hundred twenty-one thousand, one hundred sixteen".