9778860 has 192 divisors, whose sum is σ = 37632000. Its totient is φ = 2052864.

The previous prime is 9778843. The next prime is 9778889. The reversal of 9778860 is 688779.

9778860 is nontrivially palindromic in base 8.

9778860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×9778860² = 191252205799200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 49041 + ... + 49239.

It is an arithmetic number, because the mean of its divisors is an integer number (196000).

Almost surely, 2^9778860 is an apocalyptic number.

9778860 is a gapful number since it is divisible by the number (90) 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 9778860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18816000).

9778860 is an abundant number, since it is smaller than the sum of its proper divisors (27853140).

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

9778860 is a wasteful number, since it uses less digits than its factorization.

9778860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237 (or 229 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 9778860 is about 3127.1168830090. The cubic root of 9778860 is about 213.8435109472.

The spelling of 9778860 in words is "nine million, seven hundred seventy-eight thousand, eight hundred sixty".