530131440 has 160 divisors (see below), whose sum is σ = 1700891136. Its totient is φ = 136514560.

The previous prime is 530131373. The next prime is 530131447. The reversal of 530131440 is 44131035.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (530131447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 902827 + ... + 903413.

Almost surely, 2^530131440 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 530131440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (850445568).

530131440 is an abundant number, since it is smaller than the sum of its proper divisors (1170759696).

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

530131440 is a wasteful number, since it uses less digits than its factorization.

530131440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727 (or 721 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 530131440 is about 23024.5833838530. The cubic root of 530131440 is about 809.3341273517.

Adding to 530131440 its reverse (44131035), we get a palindrome (574262475).

The spelling of 530131440 in words is "five hundred thirty million, one hundred thirty-one thousand, four hundred forty".