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8012197 = 11536949
BaseRepresentation
bin11110100100000110100101
3120002001200001
4132210012211
54022342242
6443421301
7125050114
oct36440645
916061601
108012197
114582756
122824831
131876b5b
1410c7c7b
15a83eb7
hex7a41a5

8012197 has 4 divisors (see below), whose sum is σ = 8020300. Its totient is φ = 8004096.

The previous prime is 8012161. The next prime is 8012201. The reversal of 8012197 is 7912108.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 6687396 + 1324801 = 2586^2 + 1151^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-8012197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8012107) 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 3 ways as a sum of consecutive naturals, for example, 2322 + ... + 4627.

It is an arithmetic number, because the mean of its divisors is an integer number (2005075).

Almost surely, 28012197 is an apocalyptic number.

It is an amenable number.

8012197 is a deficient number, since it is larger than the sum of its proper divisors (8103).

8012197 is a wasteful number, since it uses less digits than its factorization.

8012197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8102.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 8012197 is about 2830.5824488963. The cubic root of 8012197 is about 200.1015900552.

The spelling of 8012197 in words is "eight million, twelve thousand, one hundred ninety-seven".

Divisors: 1 1153 6949 8012197