528640450 has 72 divisors (see below), whose sum is σ = 1080570348. Its totient is φ = 192291840.

The previous prime is 528640447. The next prime is 528640471. The reversal of 528640450 is 54046825.

It can be written as a sum of positive squares in 18 ways, for example, as 30591961 + 498048489 = 5531^2 + 22317^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 616422 + ... + 617278.

Almost surely, 2^528640450 is an apocalyptic number.

528640450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

528640450 is an abundant number, since it is smaller than the sum of its proper divisors (551929898).

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

528640450 is a wasteful number, since it uses less digits than its factorization.

528640450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968 (or 950 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 34.

The square root of 528640450 is about 22992.1823670569. The cubic root of 528640450 is about 808.5746665485.

The spelling of 528640450 in words is "five hundred twenty-eight million, six hundred forty thousand, four hundred fifty".