13120244730 has 80 divisors (see below), whose sum is σ = 35347476384. Its totient is φ = 3491929440.

The previous prime is 13120244701. The next prime is 13120244741. The reversal of 13120244730 is 3744202131.

It is a happy number.

13120244730 is a `hidden beast` number, since 13 + 1 + 202 + 447 + 3 + 0 = 666.

13120244730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 13120244694 and 13120244703.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 408145 + ... + 439115.

Almost surely, 2^13120244730 is an apocalyptic number.

13120244730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13120244730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17673738192).

13120244730 is an abundant number, since it is smaller than the sum of its proper divisors (22227231654).

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

13120244730 is a wasteful number, since it uses less digits than its factorization.

13120244730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31513 (or 31504 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

Adding to 13120244730 its reverse (3744202131), we get a palindrome (16864446861).

The spelling of 13120244730 in words is "thirteen billion, one hundred twenty million, two hundred forty-four thousand, seven hundred thirty".