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8168227 = 29281663
BaseRepresentation
bin11111001010001100100011
3120100222200221
4133022030203
54042340402
6451023511
7126300034
oct37121443
916328627
108168227
114679a01
12289ab97
1318ccb92
141128a8b
15ab5337
hex7ca323

8168227 has 4 divisors (see below), whose sum is σ = 8449920. Its totient is φ = 7886536.

The previous prime is 8168207. The next prime is 8168257. The reversal of 8168227 is 7228618.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7228618 = 23614309.

It is a cyclic number.

It is not a de Polignac number, because 8168227 - 27 = 8168099 is a prime.

It is a Duffinian number.

8168227 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 8168192 and 8168201.

It is not an unprimeable number, because it can be changed into a prime (8168207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140803 + ... + 140860.

It is an arithmetic number, because the mean of its divisors is an integer number (2112480).

Almost surely, 28168227 is an apocalyptic number.

8168227 is a deficient number, since it is larger than the sum of its proper divisors (281693).

8168227 is a wasteful number, since it uses less digits than its factorization.

8168227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281692.

The product of its digits is 10752, while the sum is 34.

The square root of 8168227 is about 2858.0110216722. The cubic root of 8168227 is about 201.3921783779.

The spelling of 8168227 in words is "eight million, one hundred sixty-eight thousand, two hundred twenty-seven".

Divisors: 1 29 281663 8168227