13430247 has 16 divisors (see below), whose sum is σ = 18500832. Its totient is φ = 8660480.

The previous prime is 13430243. The next prime is 13430267. The reversal of 13430247 is 74203431.

It is a cyclic number.

It is not a de Polignac number, because 13430247 - 2² = 13430243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13430243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16453 + ... + 17249.

It is an arithmetic number, because the mean of its divisors is an integer number (1156302).

Almost surely, 2^13430247 is an apocalyptic number.

13430247 is a deficient number, since it is larger than the sum of its proper divisors (5070585).

13430247 is a wasteful number, since it uses less digits than its factorization.

13430247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 13430247 is about 3664.7301401331. The cubic root of 13430247 is about 237.6993532106.

Adding to 13430247 its reverse (74203431), we get a palindrome (87633678).

It can be divided in two parts, 134 and 30247, that added together give a triangular number (30381 = T₂₄₆).

The spelling of 13430247 in words is "thirteen million, four hundred thirty thousand, two hundred forty-seven".