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8268121 = 9978293
BaseRepresentation
bin11111100010100101011001
3120120001201201
4133202211121
54104034441
6453114201
7130164211
oct37424531
916501651
108268121
114737a64
122928961
1319364a4
141153241
15ad4c31
hex7e2959

8268121 has 4 divisors (see below), whose sum is σ = 8277412. Its totient is φ = 8258832.

The previous prime is 8268079. The next prime is 8268149. The reversal of 8268121 is 1218628.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4562496 + 3705625 = 2136^2 + 1925^2 .

It is a cyclic number.

It is not a de Polignac number, because 8268121 - 213 = 8259929 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8268121.

It is not an unprimeable number, because it can be changed into a prime (8268151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3150 + ... + 5143.

It is an arithmetic number, because the mean of its divisors is an integer number (2069353).

Almost surely, 28268121 is an apocalyptic number.

It is an amenable number.

8268121 is a deficient number, since it is larger than the sum of its proper divisors (9291).

8268121 is an equidigital number, since it uses as much as digits as its factorization.

8268121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9290.

The product of its digits is 1536, while the sum is 28.

The square root of 8268121 is about 2875.4340541908. The cubic root of 8268121 is about 202.2098348868.

The spelling of 8268121 in words is "eight million, two hundred sixty-eight thousand, one hundred twenty-one".

Divisors: 1 997 8293 8268121