800008780 has 48 divisors (see below), whose sum is σ = 1800338400. Its totient is φ = 297540608.

The previous prime is 800008757. The next prime is 800008823. The reversal of 800008780 is 87800008.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14046 + ... + 42394.

It is an arithmetic number, because the mean of its divisors is an integer number (37507050).

Almost surely, 2^800008780 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 800008780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (900169200).

800008780 is an abundant number, since it is smaller than the sum of its proper divisors (1000329620).

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

800008780 is a wasteful number, since it uses less digits than its factorization.

800008780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28458 (or 28456 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 800008780 is about 28284.4264569745. The cubic root of 800008780 is about 928.3211628060.

Adding to 800008780 its reverse (87800008), we get a palindrome (887808788).

The spelling of 800008780 in words is "eight hundred million, eight thousand, seven hundred eighty".