13440530 has 8 divisors (see below), whose sum is σ = 24192972. Its totient is φ = 5376208.

The previous prime is 13440529. The next prime is 13440547. The reversal of 13440530 is 3504431.

It can be written as a sum of positive squares in 2 ways, for example, as 12482089 + 958441 = 3533^2 + 979^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 672017 + ... + 672036.

Almost surely, 2^13440530 is an apocalyptic number.

13440530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13440530 is a deficient number, since it is larger than the sum of its proper divisors (10752442).

13440530 is a wasteful number, since it uses less digits than its factorization.

13440530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344060.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 13440530 is about 3666.1328399282. The cubic root of 13440530 is about 237.7600033459.

Adding to 13440530 its reverse (3504431), we get a palindrome (16944961).

The spelling of 13440530 in words is "thirteen million, four hundred forty thousand, five hundred thirty".