530865720 has 288 divisors, whose sum is σ = 2168580960. Its totient is φ = 110246400.

The previous prime is 530865707. The next prime is 530865743. The reversal of 530865720 is 27568035.

530865720 is a `hidden beast` number, since 5 + 3 + 0 + 86 + 572 + 0 = 666.

It is a super-2 number, since 2×530865720² = 563636825342236800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 304050 + ... + 305790.

It is an arithmetic number, because the mean of its divisors is an integer number (7529795).

Almost surely, 2^530865720 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 530865720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1084290480).

530865720 is an abundant number, since it is smaller than the sum of its proper divisors (1637715240).

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

530865720 is a wasteful number, since it uses less digits than its factorization.

530865720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1787 (or 1769 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 530865720 is about 23040.5234315542. The cubic root of 530865720 is about 809.7076219563.

The spelling of 530865720 in words is "five hundred thirty million, eight hundred sixty-five thousand, seven hundred twenty".