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8165412 = 2232226817
BaseRepresentation
bin11111001001100000100100
3120100211211200
4133021200210
54042243122
6451002500
7126255603
oct37114044
916324750
108165412
114677882
122899430
1318cb808
141127a3a
15ab45ac
hex7c9824

8165412 has 18 divisors (see below), whose sum is σ = 20640438. Its totient is φ = 2721792.

The previous prime is 8165411. The next prime is 8165429. The reversal of 8165412 is 2145618.

8165412 is a `hidden beast` number, since 8 + 1 + 654 + 1 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6022116 + 2143296 = 2454^2 + 1464^2 .

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

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (8165411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 113373 + ... + 113444.

It is an arithmetic number, because the mean of its divisors is an integer number (1146691).

Almost surely, 28165412 is an apocalyptic number.

It is an amenable number.

8165412 is an abundant number, since it is smaller than the sum of its proper divisors (12475026).

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

8165412 is a wasteful number, since it uses less digits than its factorization.

8165412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226827 (or 226822 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 8165412 is about 2857.5185038771. The cubic root of 8165412 is about 201.3690405897.

The spelling of 8165412 in words is "eight million, one hundred sixty-five thousand, four hundred twelve".

Divisors: 1 2 3 4 6 9 12 18 36 226817 453634 680451 907268 1360902 2041353 2721804 4082706 8165412