8420880500 has 24 divisors (see below), whose sum is σ = 18391204104. Its totient is φ = 3368352000.

The previous prime is 8420880499. The next prime is 8420880511. The reversal of 8420880500 is 50880248.

It can be written as a sum of positive squares in 4 ways, for example, as 6120676 + 8414759824 = 2474^2 + 91732^2 .

It is a super-2 number, since 2×8420880500² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8420381 + ... + 8421380.

It is an arithmetic number, because the mean of its divisors is an integer number (766300171).

Almost surely, 2^8420880500 is an apocalyptic number.

It is an amenable number.

8420880500 is an abundant number, since it is smaller than the sum of its proper divisors (9970323604).

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

8420880500 is a wasteful number, since it uses less digits than its factorization.

8420880500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16841780 (or 16841768 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 35.

The square root of 8420880500 is about 91765.3556632349. The cubic root of 8420880500 is about 2034.4756742085.

The spelling of 8420880500 in words is "eight billion, four hundred twenty million, eight hundred eighty thousand, five hundred".