526409728 has 56 divisors (see below), whose sum is σ = 1133965728. Its totient is φ = 242909184.

The previous prime is 526409713. The next prime is 526409749. The reversal of 526409728 is 827904625.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104025 + ... + 108967.

It is an arithmetic number, because the mean of its divisors is an integer number (20249388).

Almost surely, 2^526409728 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 526409728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (566982864).

526409728 is an abundant number, since it is smaller than the sum of its proper divisors (607556000).

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

526409728 is an equidigital number, since it uses as much as digits as its factorization.

526409728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4982 (or 4958 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 526409728 is about 22943.6206384258. The cubic root of 526409728 is about 807.4357397575.

The spelling of 526409728 in words is "five hundred twenty-six million, four hundred nine thousand, seven hundred twenty-eight".