13724078 has 4 divisors (see below), whose sum is σ = 20586120. Its totient is φ = 6862038.

The previous prime is 13724071. The next prime is 13724093. The reversal of 13724078 is 87042731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87042731 = 47 ⋅1851973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13724071) 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 as a sum of consecutive naturals, namely, 3431018 + ... + 3431021.

It is an arithmetic number, because the mean of its divisors is an integer number (5146530).

Almost surely, 2^13724078 is an apocalyptic number.

13724078 is a deficient number, since it is larger than the sum of its proper divisors (6862042).

13724078 is an equidigital number, since it uses as much as digits as its factorization.

13724078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6862041.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 13724078 is about 3704.6022728493. The cubic root of 13724078 is about 239.4203488311.

The spelling of 13724078 in words is "thirteen million, seven hundred twenty-four thousand, seventy-eight".