506389144 has 8 divisors (see below), whose sum is σ = 949479660. Its totient is φ = 253194568.

The previous prime is 506389133. The next prime is 506389151. The reversal of 506389144 is 441983605.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×506389144² = 512859930322105472, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 506389097 and 506389106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31649314 + ... + 31649329.

Almost surely, 2^506389144 is an apocalyptic number.

It is an amenable number.

506389144 is a deficient number, since it is larger than the sum of its proper divisors (443090516).

506389144 is a wasteful number, since it uses less digits than its factorization.

506389144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63298649 (or 63298645 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 506389144 is about 22503.0918764511. The cubic root of 506389144 is about 797.0669387483.

The spelling of 506389144 in words is "five hundred six million, three hundred eighty-nine thousand, one hundred forty-four".