9788780 has 12 divisors (see below), whose sum is σ = 20556480. Its totient is φ = 3915504.

The previous prime is 9788773. The next prime is 9788809. The reversal of 9788780 is 878879.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 244700 + ... + 244739.

It is an arithmetic number, because the mean of its divisors is an integer number (1713040).

Almost surely, 2^9788780 is an apocalyptic number.

It is an amenable number.

9788780 is an abundant number, since it is smaller than the sum of its proper divisors (10767700).

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

9788780 is a wasteful number, since it uses less digits than its factorization.

9788780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489448 (or 489446 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 47.

The square root of 9788780 is about 3128.7026065128. The cubic root of 9788780 is about 213.9157964936.

The spelling of 9788780 in words is "nine million, seven hundred eighty-eight thousand, seven hundred eighty".