13730045 has 12 divisors (see below), whose sum is σ = 19166364. Its totient is φ = 9414720.

The previous prime is 13730023. The next prime is 13730047. The reversal of 13730045 is 54003731.

It is a happy number.

13730045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 7761796 + 5968249 = 2786^2 + 2443^2 .

It is not a de Polignac number, because 13730045 - 2¹⁰ = 13729021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13730045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13730047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27776 + ... + 28265.

It is an arithmetic number, because the mean of its divisors is an integer number (1597197).

Almost surely, 2^13730045 is an apocalyptic number.

It is an amenable number.

13730045 is a deficient number, since it is larger than the sum of its proper divisors (5436319).

13730045 is an equidigital number, since it uses as much as digits as its factorization.

13730045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56060 (or 56053 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 13730045 is about 3705.4075349413. The cubic root of 13730045 is about 239.4550424604.

Adding to 13730045 its reverse (54003731), we get a palindrome (67733776).

The spelling of 13730045 in words is "thirteen million, seven hundred thirty thousand, forty-five".