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2166130 = 25251863
BaseRepresentation
bin1000010000110101110010
311002001101001
420100311302
51023304010
6114232214
724261151
oct10206562
94061331
102166130
11124a49a
1288566a
135aac45
14405598
152cbc3a
hex210d72

2166130 has 16 divisors (see below), whose sum is σ = 3919104. Its totient is φ = 862000.

The previous prime is 2166127. The next prime is 2166137. The reversal of 2166130 is 316612.

It is a junction number, because it is equal to n+sod(n) for n = 2166098 and 2166107.

It is not an unprimeable number, because it can be changed into a prime (2166137) 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, 2079 + ... + 2941.

It is an arithmetic number, because the mean of its divisors is an integer number (244944).

22166130 is an apocalyptic number.

2166130 is a deficient number, since it is larger than the sum of its proper divisors (1752974).

2166130 is a wasteful number, since it uses less digits than its factorization.

2166130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 2166130 is about 1471.7778364957. Note that the first 3 decimals coincide. The cubic root of 2166130 is about 129.3882500218.

The spelling of 2166130 in words is "two million, one hundred sixty-six thousand, one hundred thirty".

Divisors: 1 2 5 10 251 502 863 1255 1726 2510 4315 8630 216613 433226 1083065 2166130