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2138171 = 7476797
BaseRepresentation
bin1000001010000000111011
311000122000112
420022000323
51021410141
6113454535
724113510
oct10120073
94018015
102138171
111230492
1287144b
1359b2b9
143d9307
152c37eb
hex20a03b

2138171 has 16 divisors (see below), whose sum is σ = 2558976. Its totient is φ = 1748736.

The previous prime is 2138167. The next prime is 2138189. The reversal of 2138171 is 1718312.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2138171 - 22 = 2138167 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2138371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21995 + ... + 22091.

It is an arithmetic number, because the mean of its divisors is an integer number (159936).

22138171 is an apocalyptic number.

2138171 is a deficient number, since it is larger than the sum of its proper divisors (420805).

2138171 is an equidigital number, since it uses as much as digits as its factorization.

With its successor (2138172) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (218).

2138171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218.

The product of its digits is 336, while the sum is 23.

The square root of 2138171 is about 1462.2486108730. The cubic root of 2138171 is about 128.8291510668.

The spelling of 2138171 in words is "two million, one hundred thirty-eight thousand, one hundred seventy-one".

Divisors: 1 7 47 67 97 329 469 679 3149 4559 6499 22043 31913 45493 305453 2138171