8161128 has 32 divisors (see below), whose sum is σ = 22670400. Its totient is φ = 2720304.

The previous prime is 8161121. The next prime is 8161183. The reversal of 8161128 is 8211618.

8161128 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (8161121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18676 + ... + 19107.

It is an arithmetic number, because the mean of its divisors is an integer number (708450).

Almost surely, 2^8161128 is an apocalyptic number.

It is an amenable number.

8161128 is an abundant number, since it is smaller than the sum of its proper divisors (14509272).

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

8161128 is a wasteful number, since it uses less digits than its factorization.

8161128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37798 (or 37788 counting only the distinct ones).

The product of its digits is 768, while the sum is 27.

The square root of 8161128 is about 2856.7688040862. The cubic root of 8161128 is about 201.3338182037. Note that the first 3 decimals are identical.

The spelling of 8161128 in words is "eight million, one hundred sixty-one thousand, one hundred twenty-eight".