528380440 has 64 divisors (see below), whose sum is σ = 1375948800. Its totient is φ = 178858368.

The previous prime is 528380423. The next prime is 528380441. The reversal of 528380440 is 44083825.

It is a junction number, because it is equal to n+sod(n) for n = 528380396 and 528380405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (528380441) by changing a digit.

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, 10177 + ... + 34063.

It is an arithmetic number, because the mean of its divisors is an integer number (21499200).

Almost surely, 2^528380440 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 528380440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (687974400).

528380440 is an abundant number, since it is smaller than the sum of its proper divisors (847568360).

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

528380440 is a wasteful number, since it uses less digits than its factorization.

528380440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23984 (or 23980 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 34.

The square root of 528380440 is about 22986.5273584332. The cubic root of 528380440 is about 808.4420799125.

The spelling of 528380440 in words is "five hundred twenty-eight million, three hundred eighty thousand, four hundred forty".