13240304520 has 64 divisors (see below), whose sum is σ = 39841035840. Its totient is φ = 3520070400.

The previous prime is 13240304513. The next prime is 13240304557. The reversal of 13240304520 is 2540304231.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126951 + ... + 206390.

It is an arithmetic number, because the mean of its divisors is an integer number (622516185).

Almost surely, 2^13240304520 is an apocalyptic number.

13240304520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13240304520 is an abundant number, since it is smaller than the sum of its proper divisors (26600731320).

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

13240304520 is a wasteful number, since it uses less digits than its factorization.

13240304520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333686 (or 333682 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 13240304520 its reverse (2540304231), we get a palindrome (15780608751).

The spelling of 13240304520 in words is "thirteen billion, two hundred forty million, three hundred four thousand, five hundred twenty".