8138744 has 16 divisors (see below), whose sum is σ = 15298800. Its totient is φ = 4059072.

The previous prime is 8138743. The next prime is 8138747. The reversal of 8138744 is 4478318.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8138743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2852 + ... + 4940.

It is an arithmetic number, because the mean of its divisors is an integer number (956175).

Almost surely, 2^8138744 is an apocalyptic number.

It is an amenable number.

8138744 is a deficient number, since it is larger than the sum of its proper divisors (7160056).

8138744 is a wasteful number, since it uses less digits than its factorization.

8138744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2582 (or 2578 counting only the distinct ones).

The product of its digits is 21504, while the sum is 35.

The square root of 8138744 is about 2852.8484011598. The cubic root of 8138744 is about 201.1495796728.

The spelling of 8138744 in words is "eight million, one hundred thirty-eight thousand, seven hundred forty-four".