531340628 has 24 divisors (see below), whose sum is σ = 1144426752. Its totient is φ = 210200544.

The previous prime is 531340613. The next prime is 531340631. The reversal of 531340628 is 826043135.

It is a junction number, because it is equal to n+sod(n) for n = 531340594 and 531340603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 729500 + ... + 730227.

It is an arithmetic number, because the mean of its divisors is an integer number (47684448).

Almost surely, 2^531340628 is an apocalyptic number.

It is an amenable number.

531340628 is an abundant number, since it is smaller than the sum of its proper divisors (613086124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531340628 is a wasteful number, since it uses less digits than its factorization.

531340628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1459751 (or 1459749 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 531340628 is about 23050.8270567457. The cubic root of 531340628 is about 809.9490025303.

The spelling of 531340628 in words is "five hundred thirty-one million, three hundred forty thousand, six hundred twenty-eight".