506171728 has 10 divisors (see below), whose sum is σ = 980707754. Its totient is φ = 253085856.

The previous prime is 506171711. The next prime is 506171777. The reversal of 506171728 is 827171605.

It can be written as a sum of positive squares in only one way, i.e., 490711104 + 15460624 = 22152^2 + 3932^2 .

It is a congruent number.

It is an unprimeable number.

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, 15817851 + ... + 15817882.

Almost surely, 2^506171728 is an apocalyptic number.

It is an amenable number.

506171728 is a deficient number, since it is larger than the sum of its proper divisors (474536026).

506171728 is a wasteful number, since it uses less digits than its factorization.

506171728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31635741 (or 31635735 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 37.

The square root of 506171728 is about 22498.2605549851. The cubic root of 506171728 is about 796.9528499988.

The spelling of 506171728 in words is "five hundred six million, one hundred seventy-one thousand, seven hundred twenty-eight".