523409280 has 256 divisors, whose sum is σ = 1753012800. Its totient is φ = 132710400.

The previous prime is 523409221. The next prime is 523409317. The reversal of 523409280 is 82904325.

It is a happy number.

523409280 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4801866 + ... + 4801974.

Almost surely, 2^523409280 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 523409280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (876506400).

523409280 is an abundant number, since it is smaller than the sum of its proper divisors (1229603520).

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

523409280 is a wasteful number, since it uses less digits than its factorization.

523409280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 523409280 is about 22878.1397845192. The cubic root of 523409280 is about 805.8987326258.

The spelling of 523409280 in words is "five hundred twenty-three million, four hundred nine thousand, two hundred eighty".