13179440 has 20 divisors (see below), whose sum is σ = 30642384. Its totient is φ = 5271744.

The previous prime is 13179401. The next prime is 13179449. The reversal of 13179440 is 4497131.

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

It is not an unprimeable number, because it can be changed into a prime (13179449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82292 + ... + 82451.

Almost surely, 2^13179440 is an apocalyptic number.

13179440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13179440 is an abundant number, since it is smaller than the sum of its proper divisors (17462944).

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

13179440 is a wasteful number, since it uses less digits than its factorization.

13179440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164756 (or 164750 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 13179440 is about 3630.3498454006. The cubic root of 13179440 is about 236.2103840705.

The spelling of 13179440 in words is "thirteen million, one hundred seventy-nine thousand, four hundred forty".