9774128 has 80 divisors (see below), whose sum is σ = 23956800. Its totient is φ = 3838464.

The previous prime is 9774097. The next prime is 9774143. The reversal of 9774128 is 8214779.

It is a junction number, because it is equal to n+sod(n) for n = 9774091 and 9774100.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71276 + ... + 71412.

It is an arithmetic number, because the mean of its divisors is an integer number (299460).

Almost surely, 2^9774128 is an apocalyptic number.

9774128 is a gapful number since it is divisible by the number (98) 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 9774128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11978400).

9774128 is an abundant number, since it is smaller than the sum of its proper divisors (14182672).

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

9774128 is a wasteful number, since it uses less digits than its factorization.

9774128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 159 counting only the distinct ones).

The product of its digits is 28224, while the sum is 38.

The square root of 9774128 is about 3126.3601839839. The cubic root of 9774128 is about 213.8090123533.

The spelling of 9774128 in words is "nine million, seven hundred seventy-four thousand, one hundred twenty-eight".