523412240 has 80 divisors (see below), whose sum is σ = 1314582528. Its totient is φ = 192665088.

The previous prime is 523412233. The next prime is 523412251. The reversal of 523412240 is 42214325.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 480977 + ... + 482063.

Almost surely, 2^523412240 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 523412240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (657291264).

523412240 is an abundant number, since it is smaller than the sum of its proper divisors (791170288).

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

523412240 is a wasteful number, since it uses less digits than its factorization.

523412240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1576 (or 1570 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 523412240 is about 22878.2044750020. The cubic root of 523412240 is about 805.9002518039.

Adding to 523412240 its reverse (42214325), we get a palindrome (565626565).

The spelling of 523412240 in words is "five hundred twenty-three million, four hundred twelve thousand, two hundred forty".