523563828 has 12 divisors (see below), whose sum is σ = 1221648960. Its totient is φ = 174521272.

The previous prime is 523563827. The next prime is 523563853. The reversal of 523563828 is 828365325.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-4 number, since 4×523563828⁴ (a number of 36 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 523563828.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523563827) 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 3 ways as a sum of consecutive naturals, for example, 21815148 + ... + 21815171.

It is an arithmetic number, because the mean of its divisors is an integer number (101804080).

Almost surely, 2^523563828 is an apocalyptic number.

It is an amenable number.

523563828 is an abundant number, since it is smaller than the sum of its proper divisors (698085132).

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

523563828 is a wasteful number, since it uses less digits than its factorization.

523563828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43630326 (or 43630324 counting only the distinct ones).

The product of its digits is 345600, while the sum is 42.

The square root of 523563828 is about 22881.5171699780. The cubic root of 523563828 is about 805.9780445431.

The spelling of 523563828 in words is "five hundred twenty-three million, five hundred sixty-three thousand, eight hundred twenty-eight".