7161444 has 18 divisors (see below), whose sum is σ = 18102630. Its totient is φ = 2387136.

The previous prime is 7161443. The next prime is 7161449. The reversal of 7161444 is 4441617.

7161444 is a `hidden beast` number, since 7 + 1 + 614 + 44 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6969600 + 191844 = 2640^2 + 438^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (7161443) 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 5 ways as a sum of consecutive naturals, for example, 99429 + ... + 99500.

Almost surely, 2^7161444 is an apocalyptic number.

It is an amenable number.

7161444 is an abundant number, since it is smaller than the sum of its proper divisors (10941186).

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

7161444 is a wasteful number, since it uses less digits than its factorization.

7161444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198939 (or 198934 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 7161444 is about 2676.0874425175. The cubic root of 7161444 is about 192.7525801206.

The spelling of 7161444 in words is "seven million, one hundred sixty-one thousand, four hundred forty-four".