738638532 has 18 divisors (see below), whose sum is σ = 1867114158. Its totient is φ = 246212832.

The previous prime is 738638531. The next prime is 738638539. The reversal of 738638532 is 235836837.

738638532 is a `hidden beast` number, since 7 + 3 + 8 + 638 + 5 + 3 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 381655296 + 356983236 = 19536^2 + 18894^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (738638531) 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 5 ways as a sum of consecutive naturals, for example, 10258833 + ... + 10258904.

Almost surely, 2^738638532 is an apocalyptic number.

It is an amenable number.

738638532 is an abundant number, since it is smaller than the sum of its proper divisors (1128475626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

738638532 is a wasteful number, since it uses less digits than its factorization.

738638532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20517747 (or 20517742 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 738638532 is about 27177.9052172900. The cubic root of 738638532 is about 903.9491203384.

The spelling of 738638532 in words is "seven hundred thirty-eight million, six hundred thirty-eight thousand, five hundred thirty-two".