8520404880 has 80 divisors (see below), whose sum is σ = 28445054400. Its totient is φ = 2097329664.

The previous prime is 8520404863. The next prime is 8520404887. The reversal of 8520404880 is 884040258.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (8520404887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1362330 + ... + 1368569.

It is an arithmetic number, because the mean of its divisors is an integer number (355563180).

Almost surely, 2^8520404880 is an apocalyptic number.

8520404880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8520404880 is an abundant number, since it is smaller than the sum of its proper divisors (19924649520).

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

8520404880 is a wasteful number, since it uses less digits than its factorization.

8520404880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2730928 (or 2730922 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 39.

The square root of 8520404880 is about 92306.0392390444. The cubic root of 8520404880 is about 2042.4592985432.

The spelling of 8520404880 in words is "eight billion, five hundred twenty million, four hundred four thousand, eight hundred eighty".