13840072 has 16 divisors (see below), whose sum is σ = 26652060. Its totient is φ = 6732864.

The previous prime is 13840069. The next prime is 13840081. The reversal of 13840072 is 27004831.

13840072 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10929636 + 2910436 = 3306^2 + 1706^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23083 + ... + 23674.

Almost surely, 2^13840072 is an apocalyptic number.

It is an amenable number.

13840072 is a deficient number, since it is larger than the sum of its proper divisors (12811988).

13840072 is a wasteful number, since it uses less digits than its factorization.

13840072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46800 (or 46796 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 13840072 is about 3720.2247243950. The cubic root of 13840072 is about 240.0929732378.

The spelling of 13840072 in words is "thirteen million, eight hundred forty thousand, seventy-two".