13247307 has 20 divisors (see below), whose sum is σ = 20092776. Its totient is φ = 8696160.

The previous prime is 13247303. The next prime is 13247317. The reversal of 13247307 is 70374231.

It is not a de Polignac number, because 13247307 - 2² = 13247303 is a prime.

It is a super-2 number, since 2×13247307² = 350982285504498, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (13247303) 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 19 ways as a sum of consecutive naturals, for example, 4207 + ... + 6647.

Almost surely, 2^13247307 is an apocalyptic number.

13247307 is a deficient number, since it is larger than the sum of its proper divisors (6845469).

13247307 is an equidigital number, since it uses as much as digits as its factorization.

13247307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2520 (or 2511 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 13247307 is about 3639.6850138439. The cubic root of 13247307 is about 236.6151420819.

The spelling of 13247307 in words is "thirteen million, two hundred forty-seven thousand, three hundred seven".