530691840 has 216 divisors, whose sum is σ = 2098762848. Its totient is φ = 121282560.

The previous prime is 530691827. The next prime is 530691841. The reversal of 530691840 is 48196035.

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

It is a junction number, because it is equal to n+sod(n) for n = 530691795 and 530691804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (530691841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77350 + ... + 83930.

Almost surely, 2^530691840 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 530691840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1049381424).

530691840 is an abundant number, since it is smaller than the sum of its proper divisors (1568071008).

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

530691840 is a wasteful number, since it uses less digits than its factorization.

530691840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6615 (or 6598 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 530691840 is about 23036.7497707467. The cubic root of 530691840 is about 809.6192083014.

The spelling of 530691840 in words is "five hundred thirty million, six hundred ninety-one thousand, eight hundred forty".