9122778 has 48 divisors (see below), whose sum is σ = 23924160. Its totient is φ = 2452608.

The previous prime is 9122759. The next prime is 9122803. The reversal of 9122778 is 8772219.

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 23 ways as a sum of consecutive naturals, for example, 13 + ... + 4271.

It is an arithmetic number, because the mean of its divisors is an integer number (498420).

Almost surely, 2^9122778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9122778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11962080).

9122778 is an abundant number, since it is smaller than the sum of its proper divisors (14801382).

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

9122778 is a wasteful number, since it uses less digits than its factorization.

9122778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4291 (or 4288 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 9122778 is about 3020.3936829493. The cubic root of 9122778 is about 208.9499968135.

The spelling of 9122778 in words is "nine million, one hundred twenty-two thousand, seven hundred seventy-eight".