13440006 has 20 divisors (see below), whose sum is σ = 30115932. Its totient is φ = 4479948.

The previous prime is 13440001. The next prime is 13440041. The reversal of 13440006 is 60004431.

It is a super-2 number, since 2×13440006² = 361267522560072, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13440001) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 41320 + ... + 41643.

Almost surely, 2^13440006 is an apocalyptic number.

13440006 is an abundant number, since it is smaller than the sum of its proper divisors (16675926).

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

13440006 is an equidigital number, since it uses as much as digits as its factorization.

13440006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82977 (or 82968 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 13440006 is about 3666.0613742817. The cubic root of 13440006 is about 237.7569134910.

Adding to 13440006 its reverse (60004431), we get a palindrome (73444437).

The spelling of 13440006 in words is "thirteen million, four hundred forty thousand, six".