13024807720 has 32 divisors (see below), whose sum is σ = 31029690600. Its totient is φ = 4903456768.

The previous prime is 13024807709. The next prime is 13024807723. The reversal of 13024807720 is 2770842031.

It can be written as a sum of positive squares in 4 ways, for example, as 10360389796 + 2664417924 = 101786^2 + 51618^2 .

It is a super-2 number, since 2×13024807720² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (13024807723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9576385 + ... + 9577744.

Almost surely, 2^13024807720 is an apocalyptic number.

13024807720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13024807720 is an abundant number, since it is smaller than the sum of its proper divisors (18004882880).

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

13024807720 is a wasteful number, since it uses less digits than its factorization.

13024807720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19154157 (or 19154153 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 34.

The spelling of 13024807720 in words is "thirteen billion, twenty-four million, eight hundred seven thousand, seven hundred twenty".