39128506 has 4 divisors (see below), whose sum is σ = 58692762. Its totient is φ = 19564252.

The previous prime is 39128501. The next prime is 39128513. The reversal of 39128506 is 60582193.

39128506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 39125025 + 3481 = 6255^2 + 59^2 .

It is not an unprimeable number, because it can be changed into a prime (39128501) 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, 9782125 + ... + 9782128.

Almost surely, 2^39128506 is an apocalyptic number.

39128506 is a deficient number, since it is larger than the sum of its proper divisors (19564256).

39128506 is a wasteful number, since it uses less digits than its factorization.

39128506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19564255.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 39128506 is about 6255.2782512051. The cubic root of 39128506 is about 339.4932069035.

The spelling of 39128506 in words is "thirty-nine million, one hundred twenty-eight thousand, five hundred six".