531065028 has 48 divisors (see below), whose sum is σ = 1338805440. Its totient is φ = 162873984.

The previous prime is 531065027. The next prime is 531065063. The reversal of 531065028 is 820560135.

It is a junction number, because it is equal to n+sod(n) for n = 531064986 and 531065004.

It is not an unprimeable number, because it can be changed into a prime (531065021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44083 + ... + 54821.

It is an arithmetic number, because the mean of its divisors is an integer number (27891780).

Almost surely, 2^531065028 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531065028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (669402720).

531065028 is an abundant number, since it is smaller than the sum of its proper divisors (807740412).

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

531065028 is a wasteful number, since it uses less digits than its factorization.

531065028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11076 (or 11074 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 531065028 is about 23044.8481878271. The cubic root of 531065028 is about 809.8089413726.

The spelling of 531065028 in words is "five hundred thirty-one million, sixty-five thousand, twenty-eight".