531144928 has 24 divisors (see below), whose sum is σ = 1046252592. Its totient is φ = 265430016.

The previous prime is 531144907. The next prime is 531144949. The reversal of 531144928 is 829441135.

It is an interprime number because it is at equal distance from previous prime (531144907) and next prime (531144949).

It is a super-2 number, since 2×531144928² = 564229869080250368, which contains 22 as substring.

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 in 3 ways as a sum of consecutive naturals, for example, 81901 + ... + 88147.

It is an arithmetic number, because the mean of its divisors is an integer number (43593858).

Almost surely, 2^531144928 is an apocalyptic number.

It is an amenable number.

531144928 is a deficient number, since it is larger than the sum of its proper divisors (515107664).

531144928 is a wasteful number, since it uses less digits than its factorization.

531144928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8914 (or 8906 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The square root of 531144928 is about 23046.5816988116. The cubic root of 531144928 is about 809.8495518982.

The spelling of 531144928 in words is "five hundred thirty-one million, one hundred forty-four thousand, nine hundred twenty-eight".