13272440 has 32 divisors (see below), whose sum is σ = 29970000. Its totient is φ = 5289984.

The previous prime is 13272439. The next prime is 13272443. The reversal of 13272440 is 4427231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13272443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17591 + ... + 18329.

Almost surely, 2^13272440 is an apocalyptic number.

13272440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13272440 is an abundant number, since it is smaller than the sum of its proper divisors (16697560).

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

13272440 is a wasteful number, since it uses less digits than its factorization.

13272440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199 (or 1195 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 13272440 is about 3643.1360117349. The cubic root of 13272440 is about 236.7646842117.

Adding to 13272440 its reverse (4427231), we get a palindrome (17699671).

The spelling of 13272440 in words is "thirteen million, two hundred seventy-two thousand, four hundred forty".