13440500 has 24 divisors (see below), whose sum is σ = 29355144. Its totient is φ = 5376000.

The previous prime is 13440473. The next prime is 13440529. The reversal of 13440500 is 504431.

It can be written as a sum of positive squares in 4 ways, for example, as 59536 + 13380964 = 244^2 + 3658^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12941 + ... + 13940.

It is an arithmetic number, because the mean of its divisors is an integer number (1223131).

Almost surely, 2^13440500 is an apocalyptic number.

13440500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13440500 is an abundant number, since it is smaller than the sum of its proper divisors (15914644).

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

13440500 is a wasteful number, since it uses less digits than its factorization.

13440500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26900 (or 26888 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 13440500 is about 3666.1287484211. The cubic root of 13440500 is about 237.7598264479.

Adding to 13440500 its reverse (504431), we get a palindrome (13944931).

The spelling of 13440500 in words is "thirteen million, four hundred forty thousand, five hundred".