528239380 has 48 divisors (see below), whose sum is σ = 1176086016. Its totient is φ = 198944640.

The previous prime is 528239359. The next prime is 528239381. The reversal of 528239380 is 83932825.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (528239381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11427 + ... + 34453.

It is an arithmetic number, because the mean of its divisors is an integer number (24501792).

Almost surely, 2^528239380 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 528239380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (588043008).

528239380 is an abundant number, since it is smaller than the sum of its proper divisors (647846636).

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

528239380 is a wasteful number, since it uses less digits than its factorization.

528239380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23104 (or 23102 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 528239380 is about 22983.4588345619. The cubic root of 528239380 is about 808.3701311291.

The spelling of 528239380 in words is "five hundred twenty-eight million, two hundred thirty-nine thousand, three hundred eighty".