13440048 has 20 divisors (see below), whose sum is σ = 34720248. Its totient is φ = 4480000.

The previous prime is 13440043. The next prime is 13440059. The reversal of 13440048 is 84004431.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (13440041) 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, 139953 + ... + 140048.

Almost surely, 2^13440048 is an apocalyptic number.

It is an amenable number.

13440048 is an abundant number, since it is smaller than the sum of its proper divisors (21280200).

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

13440048 is a wasteful number, since it uses less digits than its factorization.

13440048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280012 (or 280006 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 13440048 is about 3666.0671024955. The cubic root of 13440048 is about 237.7571611541.

Adding to 13440048 its reverse (84004431), we get a palindrome (97444479).

The spelling of 13440048 in words is "thirteen million, four hundred forty thousand, forty-eight".