9778828 has 12 divisors (see below), whose sum is σ = 17530632. Its totient is φ = 4770080.

The previous prime is 9778819. The next prime is 9778843. The reversal of 9778828 is 8288779.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29650 + ... + 29977.

It is an arithmetic number, because the mean of its divisors is an integer number (1460886).

Almost surely, 2^9778828 is an apocalyptic number.

It is an amenable number.

9778828 is a deficient number, since it is larger than the sum of its proper divisors (7751804).

9778828 is a wasteful number, since it uses less digits than its factorization.

9778828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59672 (or 59670 counting only the distinct ones).

The product of its digits is 451584, while the sum is 49.

The square root of 9778828 is about 3127.1117664708. Note that the first 3 decimals coincide. The cubic root of 9778828 is about 213.8432776889.

Subtracting from 9778828 its sum of digits (49), we obtain a palindrome (9778779).

The spelling of 9778828 in words is "nine million, seven hundred seventy-eight thousand, eight hundred twenty-eight".