8405812800 has 1512 divisors, whose sum is σ = 41039917920. Its totient is φ = 1654732800.

The previous prime is 8405812757. The next prime is 8405812801. The reversal of 8405812800 is 82185048.

It is a tau number, because it is divible by the number of its divisors (1512).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (8405812801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 442411191 + ... + 442411209.

Almost surely, 2^8405812800 is an apocalyptic number.

8405812800 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8405812800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20519958960).

8405812800 is an abundant number, since it is smaller than the sum of its proper divisors (32634105120).

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

8405812800 is a wasteful number, since it uses less digits than its factorization.

8405812800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94 (or 47 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 8405812800 is about 91683.2198387469. The cubic root of 8405812800 is about 2033.2615030315.

Adding to 8405812800 its reverse (82185048), we get a palindrome (8487997848).

The spelling of 8405812800 in words is "eight billion, four hundred five million, eight hundred twelve thousand, eight hundred".