13248739 has 4 divisors (see below), whose sum is σ = 15141424. Its totient is φ = 11356056.

The previous prime is 13248733. The next prime is 13248743. The reversal of 13248739 is 93784231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93784231 = 29 ⋅3233939.

It is a cyclic number.

It is not a de Polignac number, because 13248739 - 2³ = 13248731 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13248698 and 13248707.

It is not an unprimeable number, because it can be changed into a prime (13248731) 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 3 ways as a sum of consecutive naturals, for example, 946332 + ... + 946345.

It is an arithmetic number, because the mean of its divisors is an integer number (3785356).

Almost surely, 2^13248739 is an apocalyptic number.

13248739 is a deficient number, since it is larger than the sum of its proper divisors (1892685).

13248739 is an equidigital number, since it uses as much as digits as its factorization.

13248739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1892684.

The product of its digits is 36288, while the sum is 37.

The square root of 13248739 is about 3639.8817288478. The cubic root of 13248739 is about 236.6236676053.

The spelling of 13248739 in words is "thirteen million, two hundred forty-eight thousand, seven hundred thirty-nine".