13440064 has 56 divisors (see below), whose sum is σ = 30833568. Its totient is φ = 5744640.

The previous prime is 13440059. The next prime is 13440071. The reversal of 13440064 is 46004431.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11407 + ... + 12529.

Almost surely, 2^13440064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13440064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15416784).

13440064 is an abundant number, since it is smaller than the sum of its proper divisors (17393504).

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

13440064 is a wasteful number, since it uses less digits than its factorization.

13440064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163 (or 1153 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 13440064 is about 3666.0692846699. The cubic root of 13440064 is about 237.7572555018.

Adding to 13440064 its reverse (46004431), we get a palindrome (59444495).

The spelling of 13440064 in words is "thirteen million, four hundred forty thousand, sixty-four".