528121930 has 32 divisors (see below), whose sum is σ = 1097193600. Its totient is φ = 179275200.

The previous prime is 528121907. The next prime is 528121991. The reversal of 528121930 is 39121825.

It is a junction number, because it is equal to n+sod(n) for n = 528121892 and 528121901.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30280 + ... + 44419.

It is an arithmetic number, because the mean of its divisors is an integer number (34287300).

Almost surely, 2^528121930 is an apocalyptic number.

528121930 is an abundant number, since it is smaller than the sum of its proper divisors (569071670).

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

528121930 is a wasteful number, since it uses less digits than its factorization.

528121930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74814.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 528121930 is about 22980.9035940713. The cubic root of 528121930 is about 808.3102150425.

The spelling of 528121930 in words is "five hundred twenty-eight million, one hundred twenty-one thousand, nine hundred thirty".