523974840 has 64 divisors (see below), whose sum is σ = 1595410560. Its totient is φ = 137639040.

The previous prime is 523974839. The next prime is 523974853. The reversal of 523974840 is 48479325.

It is a junction number, because it is equal to n+sod(n) for n = 523974792 and 523974801.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 24546 + ... + 40625.

It is an arithmetic number, because the mean of its divisors is an integer number (24928290).

Almost surely, 2^523974840 is an apocalyptic number.

It is an amenable number.

523974840 is an abundant number, since it is smaller than the sum of its proper divisors (1071435720).

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

523974840 is a wasteful number, since it uses less digits than its factorization.

523974840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65252 (or 65248 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 523974840 is about 22890.4967180706. The cubic root of 523974840 is about 806.1888943534.

The spelling of 523974840 in words is "five hundred twenty-three million, nine hundred seventy-four thousand, eight hundred forty".