523328820 has 192 divisors, whose sum is σ = 1741824000. Its totient is φ = 117317760.

The previous prime is 523328789. The next prime is 523328831. The reversal of 523328820 is 28823325.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1214005 + ... + 1214435.

It is an arithmetic number, because the mean of its divisors is an integer number (9072000).

Almost surely, 2^523328820 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 523328820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (870912000).

523328820 is an abundant number, since it is smaller than the sum of its proper divisors (1218495180).

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

523328820 is a wasteful number, since it uses less digits than its factorization.

523328820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523 (or 507 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 523328820 is about 22876.3812697725. The cubic root of 523328820 is about 805.8574354756.

The spelling of 523328820 in words is "five hundred twenty-three million, three hundred twenty-eight thousand, eight hundred twenty".