523284840 has 384 divisors, whose sum is σ = 1960588800. Its totient is φ = 124001280.

The previous prime is 523284823. The next prime is 523284859. The reversal of 523284840 is 48482325.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 523284795 and 523284804.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8578410 + ... + 8578470.

It is an arithmetic number, because the mean of its divisors is an integer number (5105700).

Almost surely, 2^523284840 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 523284840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (980294400).

523284840 is an abundant number, since it is smaller than the sum of its proper divisors (1437303960).

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

523284840 is a wasteful number, since it uses less digits than its factorization.

523284840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

The square root of 523284840 is about 22875.4199961443. The cubic root of 523284840 is about 805.8348603746.

The spelling of 523284840 in words is "five hundred twenty-three million, two hundred eighty-four thousand, eight hundred forty".