13116444 has 24 divisors (see below), whose sum is σ = 33387648. Its totient is φ = 3974640.

The previous prime is 13116443. The next prime is 13116461. The reversal of 13116444 is 44461131.

It is a super-2 number, since 2×13116444² = 344082206410272, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13116443) 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, 49552 + ... + 49815.

It is an arithmetic number, because the mean of its divisors is an integer number (1391152).

Almost surely, 2^13116444 is an apocalyptic number.

It is an amenable number.

13116444 is an abundant number, since it is smaller than the sum of its proper divisors (20271204).

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

13116444 is a wasteful number, since it uses less digits than its factorization.

13116444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99385 (or 99383 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 13116444 is about 3621.6631538563. The cubic root of 13116444 is about 235.8334312521.

Adding to 13116444 its reverse (44461131), we get a palindrome (57577575).

The spelling of 13116444 in words is "thirteen million, one hundred sixteen thousand, four hundred forty-four".