522256240 has 40 divisors (see below), whose sum is σ = 1324633968. Its totient is φ = 189911040.

The previous prime is 522256187. The next prime is 522256243. The reversal of 522256240 is 42652225.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 522256199 and 522256208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522256243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295857 + ... + 297616.

Almost surely, 2^522256240 is an apocalyptic number.

It is an amenable number.

522256240 is an abundant number, since it is smaller than the sum of its proper divisors (802377728).

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

522256240 is a wasteful number, since it uses less digits than its factorization.

522256240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593497 (or 593491 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 522256240 is about 22852.9262896461. The cubic root of 522256240 is about 805.3065149639.

The spelling of 522256240 in words is "five hundred twenty-two million, two hundred fifty-six thousand, two hundred forty".