7161228 has 36 divisors (see below), whose sum is σ = 18378360. Its totient is φ = 2350656.

The previous prime is 7161223. The next prime is 7161229. The reversal of 7161228 is 8221617.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (7161223) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 928 + ... + 3896.

It is an arithmetic number, because the mean of its divisors is an integer number (510510).

Almost surely, 2^7161228 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 7161228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9189180).

7161228 is an abundant number, since it is smaller than the sum of its proper divisors (11217132).

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

7161228 is a wasteful number, since it uses less digits than its factorization.

7161228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3046 (or 3041 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 7161228 is about 2676.0470847876. The cubic root of 7161228 is about 192.7506421978.

The spelling of 7161228 in words is "seven million, one hundred sixty-one thousand, two hundred twenty-eight".