13272240 has 80 divisors (see below), whose sum is σ = 43577568. Its totient is φ = 3330048.

The previous prime is 13272229. The next prime is 13272253. The reversal of 13272240 is 4227231.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2454 + ... + 5706.

Almost surely, 2^13272240 is an apocalyptic number.

13272240 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 13272240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21788784).

13272240 is an abundant number, since it is smaller than the sum of its proper divisors (30305328).

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

13272240 is a wasteful number, since it uses less digits than its factorization.

13272240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3286 (or 3280 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 13272240 is about 3643.1085627524. The cubic root of 13272240 is about 236.7634949510.

Adding to 13272240 its reverse (4227231), we get a palindrome (17499471).

The spelling of 13272240 in words is "thirteen million, two hundred seventy-two thousand, two hundred forty".