9618228 has 54 divisors (see below), whose sum is σ = 25125282. Its totient is φ = 3101280.

The previous prime is 9618137. The next prime is 9618233. The reversal of 9618228 is 8228169.

It can be written as a sum of positive squares in only one way, i.e., 8892324 + 725904 = 2982^2 + 852^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 9618192 and 9618201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 135433 + ... + 135503.

It is an arithmetic number, because the mean of its divisors is an integer number (465283).

Almost surely, 2^9618228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9618228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12562641).

9618228 is an abundant number, since it is smaller than the sum of its proper divisors (15507054).

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

9618228 is a wasteful number, since it uses less digits than its factorization.

9618228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205 (or 129 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 9618228 is about 3101.3268128335. The cubic root of 9618228 is about 212.6661436534. Note that the first 3 decimals are identical.

The spelling of 9618228 in words is "nine million, six hundred eighteen thousand, two hundred twenty-eight".