39040128 has 48 divisors (see below), whose sum is σ = 112345350. Its totient is φ = 13012992.

The previous prime is 39040073. The next prime is 39040147. The reversal of 39040128 is 82104093.

It can be written as a sum of positive squares in only one way, i.e., 23736384 + 15303744 = 4872^2 + 3912^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15793 + ... + 18096.

Almost surely, 2^39040128 is an apocalyptic number.

It is an amenable number.

39040128 is an abundant number, since it is smaller than the sum of its proper divisors (73305222).

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

39040128 is a wasteful number, since it uses less digits than its factorization.

39040128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33909 (or 33894 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 39040128 is about 6248.2099836673. The cubic root of 39040128 is about 339.2374142900.

The spelling of 39040128 in words is "thirty-nine million, forty thousand, one hundred twenty-eight".