13271040 has 160 divisors (see below), whose sum is σ = 47578410. Its totient is φ = 3538944.

The previous prime is 13271039. The next prime is 13271051. The reversal of 13271040 is 4017231.

It is a Jordan-Polya number, since it can be written as 6! ⋅ (4!)² ⋅ (2!)⁵.

It can be written as a sum of positive squares in only one way, i.e., 11943936 + 1327104 = 3456^2 + 1152^2 .

It is a tau number, because it is divible by the number of its divisors (160).

It is a super-2 number, since 2×13271040² = 352241005363200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2654206 + ... + 2654210.

Almost surely, 2^13271040 is an apocalyptic number.

13271040 is a gapful number since it is divisible by the number (10) 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 13271040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23789205).

13271040 is an abundant number, since it is smaller than the sum of its proper divisors (34307370).

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

13271040 is an frugal number, since it uses more digits than its factorization.

13271040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47 (or 10 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 13271040 is about 3642.9438645140. The cubic root of 13271040 is about 236.7563591357.

Adding to 13271040 its reverse (4017231), we get a palindrome (17288271).

The spelling of 13271040 in words is "thirteen million, two hundred seventy-one thousand, forty".