528250000 has 70 divisors (see below), whose sum is σ = 1279944554. Its totient is φ = 211200000.

The previous prime is 528249991. The next prime is 528250003. The reversal of 528250000 is 52825.

It can be written as a sum of positive squares in 7 ways, for example, as 444197776 + 84052224 = 21076^2 + 9168^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (528250003) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 248944 + ... + 251056.

Almost surely, 2^528250000 is an apocalyptic number.

528250000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 528250000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (639972277).

528250000 is an abundant number, since it is smaller than the sum of its proper divisors (751694554).

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

528250000 is an frugal number, since it uses more digits than its factorization.

528250000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2151 (or 2120 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 528250000 is about 22983.6898691224. The cubic root of 528250000 is about 808.3755483911.

Multiplying 528250000 by its reverse (52825), we get a square (27904806250000 = 5282500²).

528250000 divided by its reverse (52825) gives a 4-th power (10000 = 10⁴).

The spelling of 528250000 in words is "five hundred twenty-eight million, two hundred fifty thousand".