13227440 has 20 divisors (see below), whose sum is σ = 30753984. Its totient is φ = 5290944.

The previous prime is 13227433. The next prime is 13227457. The reversal of 13227440 is 4472231.

13227440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

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, 82592 + ... + 82751.

Almost surely, 2^13227440 is an apocalyptic number.

13227440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13227440 is an abundant number, since it is smaller than the sum of its proper divisors (17526544).

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

13227440 is a wasteful number, since it uses less digits than its factorization.

13227440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165356 (or 165350 counting only the distinct ones).

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

The square root of 13227440 is about 3636.9547701339. The cubic root of 13227440 is about 236.4967989114.

Adding to 13227440 its reverse (4472231), we get a palindrome (17699671).

It can be divided in two parts, 132 and 27440, that added together give a palindrome (27572).

The spelling of 13227440 in words is "thirteen million, two hundred twenty-seven thousand, four hundred forty".