524220040 has 16 divisors (see below), whose sum is σ = 1179495180. Its totient is φ = 209688000.

The previous prime is 524220029. The next prime is 524220077. The reversal of 524220040 is 40022425.

It can be written as a sum of positive squares in 2 ways, for example, as 502746084 + 21473956 = 22422^2 + 4634^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6552711 + ... + 6552790.

Almost surely, 2^524220040 is an apocalyptic number.

It is an amenable number.

524220040 is an abundant number, since it is smaller than the sum of its proper divisors (655275140).

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

524220040 is a wasteful number, since it uses less digits than its factorization.

524220040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13105512 (or 13105508 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 524220040 is about 22895.8520260767. The cubic root of 524220040 is about 806.3146298370.

Adding to 524220040 its reverse (40022425), we get a palindrome (564242465).

The spelling of 524220040 in words is "five hundred twenty-four million, two hundred twenty thousand, forty".