528309868400 has 30 divisors (see below), whose sum is σ = 1269264459792. Its totient is φ = 211323947200.

The previous prime is 528309868381. The next prime is 528309868421. The reversal of 528309868400 is 4868903825.

It is a super-2 number, since 2×528309868400² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 660386936 + ... + 660387735.

Almost surely, 2^528309868400 is an apocalyptic number.

528309868400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

528309868400 is an abundant number, since it is smaller than the sum of its proper divisors (740954591392).

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

528309868400 is a wasteful number, since it uses less digits than its factorization.

528309868400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320774689 (or 1320774678 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 53.

The spelling of 528309868400 in words is "five hundred twenty-eight billion, three hundred nine million, eight hundred sixty-eight thousand, four hundred".