39520144 has 40 divisors (see below), whose sum is σ = 79251128. Its totient is φ = 19077120.

The previous prime is 39520111. The next prime is 39520153. The reversal of 39520144 is 44102593.

It can be written as a sum of positive squares in 4 ways, for example, as 11641744 + 27878400 = 3412^2 + 5280^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142534 + ... + 142810.

Almost surely, 2^39520144 is an apocalyptic number.

It is an amenable number.

39520144 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

39520144 is a wasteful number, since it uses less digits than its factorization.

39520144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563 (or 557 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 39520144 is about 6286.5049113160. The cubic root of 39520144 is about 340.6221135911.

The spelling of 39520144 in words is "thirty-nine million, five hundred twenty thousand, one hundred forty-four".