13247306 has 8 divisors (see below), whose sum is σ = 19894980. Its totient is φ = 6615648.

The previous prime is 13247303. The next prime is 13247317. The reversal of 13247306 is 60374231.

It can be written as a sum of positive squares in 2 ways, for example, as 11662225 + 1585081 = 3415^2 + 1259^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×13247306² = 350982232515272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13247303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1661 + ... + 5408.

Almost surely, 2^13247306 is an apocalyptic number.

13247306 is a deficient number, since it is larger than the sum of its proper divisors (6647674).

13247306 is an equidigital number, since it uses as much as digits as its factorization.

13247306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8008.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 13247306 is about 3639.6848764694. The cubic root of 13247306 is about 236.6151361281.

The spelling of 13247306 in words is "thirteen million, two hundred forty-seven thousand, three hundred six".