13874247 has 20 divisors (see below), whose sum is σ = 20876856. Its totient is φ = 9182160.

The previous prime is 13874243. The next prime is 13874279. The reversal of 13874247 is 74247831.

It is a happy number.

It is not a de Polignac number, because 13874247 - 2² = 13874243 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13874243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12172 + ... + 13262.

Almost surely, 2^13874247 is an apocalyptic number.

13874247 is a deficient number, since it is larger than the sum of its proper divisors (7002609).

13874247 is a wasteful number, since it uses less digits than its factorization.

13874247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260 (or 1251 counting only the distinct ones).

The product of its digits is 37632, while the sum is 36.

The square root of 13874247 is about 3724.8150289645. The cubic root of 13874247 is about 240.2904296525.

The spelling of 13874247 in words is "thirteen million, eight hundred seventy-four thousand, two hundred forty-seven".