13771144 has 16 divisors (see below), whose sum is σ = 25937100. Its totient is φ = 6854592.

The previous prime is 13771127. The next prime is 13771151. The reversal of 13771144 is 44117731.

It can be written as a sum of positive squares in 2 ways, for example, as 10304100 + 3467044 = 3210^2 + 1862^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1927 + ... + 5590.

Almost surely, 2^13771144 is an apocalyptic number.

It is an amenable number.

13771144 is a deficient number, since it is larger than the sum of its proper divisors (12165956).

13771144 is a wasteful number, since it uses less digits than its factorization.

13771144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7752 (or 7748 counting only the distinct ones).

The product of its digits is 2352, while the sum is 28.

The square root of 13771144 is about 3710.9492047184. The cubic root of 13771144 is about 239.6937296970.

Adding to 13771144 its reverse (44117731), we get a palindrome (57888875).

The spelling of 13771144 in words is "thirteen million, seven hundred seventy-one thousand, one hundred forty-four".