8520394800 has 60 divisors (see below), whose sum is σ = 27293668520. Its totient is φ = 2272104960.

The previous prime is 8520394769. The next prime is 8520394807. The reversal of 8520394800 is 84930258.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (60).

It is not an unprimeable number, because it can be changed into a prime (8520394807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3548965 + ... + 3551364.

Almost surely, 2^8520394800 is an apocalyptic number.

8520394800 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8520394800 is an abundant number, since it is smaller than the sum of its proper divisors (18773273720).

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

8520394800 is a wasteful number, since it uses less digits than its factorization.

8520394800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7100350 (or 7100339 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 8520394800 is about 92305.9846380504. The cubic root of 8520394800 is about 2042.4584931042.

The spelling of 8520394800 in words is "eight billion, five hundred twenty million, three hundred ninety-four thousand, eight hundred".