531268628 has 24 divisors (see below), whose sum is σ = 1058339520. Its totient is φ = 230985920.

The previous prime is 531268609. The next prime is 531268631. The reversal of 531268628 is 826862135.

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 7 ways as a sum of consecutive naturals, for example, 261473 + ... + 263496.

It is an arithmetic number, because the mean of its divisors is an integer number (44097480).

Almost surely, 2^531268628 is an apocalyptic number.

It is an amenable number.

531268628 is a deficient number, since it is larger than the sum of its proper divisors (527070892).

531268628 is a wasteful number, since it uses less digits than its factorization.

531268628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525007 (or 525005 counting only the distinct ones).

The product of its digits is 138240, while the sum is 41.

The square root of 531268628 is about 23049.2652377467. The cubic root of 531268628 is about 809.9124164815.

The spelling of 531268628 in words is "five hundred thirty-one million, two hundred sixty-eight thousand, six hundred twenty-eight".