528997980 has 96 divisors (see below), whose sum is σ = 1699278336. Its totient is φ = 120450816.

The previous prime is 528997979. The next prime is 528998003. The reversal of 528997980 is 89799825.

It is a self number, because there is not a number n which added to its sum of digits gives 528997980.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 114067 + ... + 118613.

It is an arithmetic number, because the mean of its divisors is an integer number (17700816).

Almost surely, 2^528997980 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 528997980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (849639168).

528997980 is an abundant number, since it is smaller than the sum of its proper divisors (1170280356).

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

528997980 is a wasteful number, since it uses less digits than its factorization.

528997980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4843 (or 4841 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 57.

The square root of 528997980 is about 22999.9560869146. The cubic root of 528997980 is about 808.7569104868.

The spelling of 528997980 in words is "five hundred twenty-eight million, nine hundred ninety-seven thousand, nine hundred eighty".