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8197137 = 321370061
BaseRepresentation
bin11111010001010000010001
3120102110100200
4133101100101
54044302022
6451405413
7126450234
oct37212021
916373320
108197137
1146996a3
1228b3869
1319100a0
14113541b
15abdbac
hex7d1411

8197137 has 12 divisors (see below), whose sum is σ = 12751284. Its totient is φ = 5044320.

The previous prime is 8197099. The next prime is 8197141. The reversal of 8197137 is 7317918.

It can be written as a sum of positive squares in 2 ways, for example, as 1648656 + 6548481 = 1284^2 + 2559^2 .

It is not a de Polignac number, because 8197137 - 210 = 8196113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8197537) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34914 + ... + 35147.

It is an arithmetic number, because the mean of its divisors is an integer number (1062607).

Almost surely, 28197137 is an apocalyptic number.

It is an amenable number.

8197137 is a deficient number, since it is larger than the sum of its proper divisors (4554147).

8197137 is a wasteful number, since it uses less digits than its factorization.

8197137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70080 (or 70077 counting only the distinct ones).

The product of its digits is 10584, while the sum is 36.

The square root of 8197137 is about 2863.0642675288. The cubic root of 8197137 is about 201.6294959913.

The spelling of 8197137 in words is "eight million, one hundred ninety-seven thousand, one hundred thirty-seven".

Divisors: 1 3 9 13 39 117 70061 210183 630549 910793 2732379 8197137