520040738 has 16 divisors (see below), whose sum is σ = 906114624. Its totient is φ = 219220560.

The previous prime is 520040737. The next prime is 520040749. The reversal of 520040738 is 837040025.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 520040738.

It is not an unprimeable number, because it can be changed into a prime (520040737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303620 + ... + 305327.

It is an arithmetic number, because the mean of its divisors is an integer number (56632164).

Almost surely, 2^520040738 is an apocalyptic number.

520040738 is a deficient number, since it is larger than the sum of its proper divisors (386073886).

520040738 is a wasteful number, since it uses less digits than its factorization.

520040738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609017.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 520040738 is about 22804.4017242286. The cubic root of 520040738 is about 804.1661506984.

The spelling of 520040738 in words is "five hundred twenty million, forty thousand, seven hundred thirty-eight".