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2161124 = 22779977
BaseRepresentation
bin1000001111100111100100
311001210111122
420033213210
51023123444
6114153112
724240440
oct10174744
94053448
102161124
111246759
12882798
135a8894
14403820
152ca4ee
hex20f9e4

2161124 has 24 divisors (see below), whose sum is σ = 4381440. Its totient is φ = 913536.

The previous prime is 2161121. The next prime is 2161127. The reversal of 2161124 is 4211612.

2161124 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2161121) and next prime (2161127).

It is not an unprimeable number, because it can be changed into a prime (2161121) 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 7 ways as a sum of consecutive naturals, for example, 1724 + ... + 2700.

It is an arithmetic number, because the mean of its divisors is an integer number (182560).

22161124 is an apocalyptic number.

It is an amenable number.

2161124 is an abundant number, since it is smaller than the sum of its proper divisors (2220316).

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

2161124 is a wasteful number, since it uses less digits than its factorization.

2161124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067 (or 1065 counting only the distinct ones).

The product of its digits is 96, while the sum is 17.

The square root of 2161124 is about 1470.0761885018. The cubic root of 2161124 is about 129.2884995933.

Adding to 2161124 its reverse (4211612), we get a palindrome (6372736).

The spelling of 2161124 in words is "two million, one hundred sixty-one thousand, one hundred twenty-four".

Divisors: 1 2 4 7 14 28 79 158 316 553 977 1106 1954 2212 3908 6839 13678 27356 77183 154366 308732 540281 1080562 2161124