523067240 has 64 divisors (see below), whose sum is σ = 1196370000. Its totient is φ = 205793280.

The previous prime is 523067231. The next prime is 523067243. The reversal of 523067240 is 42760325.

It can be written as a sum of positive squares in 8 ways, for example, as 49308484 + 473758756 = 7022^2 + 21766^2 .

It is a super-2 number, since 2×523067240² = 547198675122435200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (523067243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1242230 + ... + 1242650.

Almost surely, 2^523067240 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 523067240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (598185000).

523067240 is an abundant number, since it is smaller than the sum of its proper divisors (673302760).

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

523067240 is a wasteful number, since it uses less digits than its factorization.

523067240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870 (or 866 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 523067240 is about 22870.6633047667. The cubic root of 523067240 is about 805.7231468531.

The spelling of 523067240 in words is "five hundred twenty-three million, sixty-seven thousand, two hundred forty".