530212340 has 72 divisors (see below), whose sum is σ = 1304174592. Its totient is φ = 180532800.

The previous prime is 530212279. The next prime is 530212357. The reversal of 530212340 is 43212035.

It is a happy number.

It is a super-2 number, since 2×530212340² = 562250250976551200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 146189 + ... + 149771.

It is an arithmetic number, because the mean of its divisors is an integer number (18113536).

Almost surely, 2^530212340 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 530212340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (652087296).

530212340 is an abundant number, since it is smaller than the sum of its proper divisors (773962252).

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

530212340 is a wasteful number, since it uses less digits than its factorization.

530212340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3757 (or 3748 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 530212340 is about 23026.3401347240. The cubic root of 530212340 is about 809.3752943753.

Adding to 530212340 its reverse (43212035), we get a palindrome (573424375).

The spelling of 530212340 in words is "five hundred thirty million, two hundred twelve thousand, three hundred forty".