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79284161 = 112655241
BaseRepresentation
bin1001011100111…
…00011111000001
312112012001102102
410232130133001
5130244043121
611511200145
71651622105
oct456343701
9175161372
1079284161
1140832400
1222676055
131356c608
14a75b905
156e6190b
hex4b9c7c1

79284161 has 6 divisors (see below), whose sum is σ = 87147186. Its totient is φ = 72076400.

The previous prime is 79284157. The next prime is 79284167. The reversal of 79284161 is 16148297.

It can be written as a sum of positive squares in only one way, i.e., 73427761 + 5856400 = 8569^2 + 2420^2 .

It is not a de Polignac number, because 79284161 - 22 = 79284157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (79284167) 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, 327500 + ... + 327741.

It is an arithmetic number, because the mean of its divisors is an integer number (14524531).

Almost surely, 279284161 is an apocalyptic number.

It is an amenable number.

79284161 is a deficient number, since it is larger than the sum of its proper divisors (7863025).

79284161 is a wasteful number, since it uses less digits than its factorization.

79284161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655263 (or 655252 counting only the distinct ones).

The product of its digits is 24192, while the sum is 38.

The square root of 79284161 is about 8904.1653735766. The cubic root of 79284161 is about 429.5978952356.

The spelling of 79284161 in words is "seventy-nine million, two hundred eighty-four thousand, one hundred sixty-one".

Divisors: 1 11 121 655241 7207651 79284161