528650388 has 192 divisors, whose sum is σ = 1620057600. Its totient is φ = 147806208.

The previous prime is 528650387. The next prime is 528650389. The reversal of 528650388 is 883056825.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (528650387) and next prime (528650389).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (528650387) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5449956 + ... + 5450052.

It is an arithmetic number, because the mean of its divisors is an integer number (8437800).

Almost surely, 2^528650388 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 528650388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (810028800).

528650388 is an abundant number, since it is smaller than the sum of its proper divisors (1091407212).

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

528650388 is an equidigital number, since it uses as much as digits as its factorization.

528650388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The square root of 528650388 is about 22992.3984829769. The cubic root of 528650388 is about 808.5797333601.

The spelling of 528650388 in words is "five hundred twenty-eight million, six hundred fifty thousand, three hundred eighty-eight".