15730013 has 6 divisors (see below), whose sum is σ = 17033274. Its totient is φ = 14519856.

The previous prime is 15730003. The next prime is 15730021. The reversal of 15730013 is 31003751.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 574564 + 15155449 = 758^2 + 3893^2 .

It is not a de Polignac number, because 15730013 - 2⁴ = 15729997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15730003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46370 + ... + 46707.

It is an arithmetic number, because the mean of its divisors is an integer number (2838879).

Almost surely, 2^15730013 is an apocalyptic number.

15730013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

15730013 is a deficient number, since it is larger than the sum of its proper divisors (1303261).

15730013 is an equidigital number, since it uses as much as digits as its factorization.

15730013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93103 (or 93090 counting only the distinct ones).

The product of its (nonzero) digits is 315, while the sum is 20.

The square root of 15730013 is about 3966.1080418970. The cubic root of 15730013 is about 250.5588192866.

Adding to 15730013 its reverse (31003751), we get a palindrome (46733764).

It can be divided in two parts, 157300 and 13, that multiplied together give a square (2044900 = 1430²).

The spelling of 15730013 in words is "fifteen million, seven hundred thirty thousand, thirteen".