338638724 has 6 divisors (see below), whose sum is σ = 592617774. Its totient is φ = 169319360.

The previous prime is 338638723. The next prime is 338638747. The reversal of 338638724 is 427836833.

It can be written as a sum of positive squares in only one way, i.e., 205005124 + 133633600 = 14318^2 + 11560^2 .

It is a super-2 number, since 2×338638724² = 229352370784696352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (338638723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42329837 + ... + 42329844.

It is an arithmetic number, because the mean of its divisors is an integer number (98769629).

Almost surely, 2^338638724 is an apocalyptic number.

It is an amenable number.

338638724 is a deficient number, since it is larger than the sum of its proper divisors (253979050).

338638724 is a wasteful number, since it uses less digits than its factorization.

338638724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84659685 (or 84659683 counting only the distinct ones).

The product of its digits is 580608, while the sum is 44.

The square root of 338638724 is about 18402.1391147877. The cubic root of 338638724 is about 697.0204813846.

The spelling of 338638724 in words is "three hundred thirty-eight million, six hundred thirty-eight thousand, seven hundred twenty-four".