528020640 has 384 divisors, whose sum is σ = 2225664000. Its totient is φ = 114213888.

The previous prime is 528020617. The next prime is 528020653. The reversal of 528020640 is 46020825.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 574101 + ... + 575019.

It is an arithmetic number, because the mean of its divisors is an integer number (5796000).

Almost surely, 2^528020640 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 528020640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1112832000).

528020640 is an abundant number, since it is smaller than the sum of its proper divisors (1697643360).

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

528020640 is a wasteful number, since it uses less digits than its factorization.

528020640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969 (or 955 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 528020640 is about 22978.6997021154. The cubic root of 528020640 is about 808.2585357036.

The spelling of 528020640 in words is "five hundred twenty-eight million, twenty thousand, six hundred forty".