44128161 has 48 divisors (see below), whose sum is σ = 81664128. Its totient is φ = 22291200.

The previous prime is 44128157. The next prime is 44128163. The reversal of 44128161 is 16182144.

It is a happy number.

It is not a de Polignac number, because 44128161 - 2² = 44128157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (44128163) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24781 + ... + 26501.

It is an arithmetic number, because the mean of its divisors is an integer number (1701336).

Almost surely, 2^44128161 is an apocalyptic number.

It is an amenable number.

44128161 is a deficient number, since it is larger than the sum of its proper divisors (37535967).

44128161 is a wasteful number, since it uses less digits than its factorization.

44128161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782 (or 1779 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 44128161 is about 6642.9030551409. The cubic root of 44128161 is about 353.3772686753.

The spelling of 44128161 in words is "forty-four million, one hundred twenty-eight thousand, one hundred sixty-one".