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8187268 = 2217120401
BaseRepresentation
bin11111001110110110000100
3120101221211011
4133032312010
54043443033
6451252004
7126406405
oct37166604
916357734
108187268
114692241
1228aa004
13190874b
1411319ac
15abaccd
hex7ced84

8187268 has 12 divisors (see below), whose sum is σ = 15170652. Its totient is φ = 3852800.

The previous prime is 8187247. The next prime is 8187269. The reversal of 8187268 is 8627818.

It can be written as a sum of positive squares in 2 ways, for example, as 2795584 + 5391684 = 1672^2 + 2322^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 8187268.

It is not an unprimeable number, because it can be changed into a prime (8187269) 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, 60133 + ... + 60268.

It is an arithmetic number, because the mean of its divisors is an integer number (1264221).

Almost surely, 28187268 is an apocalyptic number.

It is an amenable number.

8187268 is a deficient number, since it is larger than the sum of its proper divisors (6983384).

8187268 is a wasteful number, since it uses less digits than its factorization.

8187268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120422 (or 120420 counting only the distinct ones).

The product of its digits is 43008, while the sum is 40.

The square root of 8187268 is about 2861.3402454095. The cubic root of 8187268 is about 201.5485457519.

The spelling of 8187268 in words is "eight million, one hundred eighty-seven thousand, two hundred sixty-eight".

Divisors: 1 2 4 17 34 68 120401 240802 481604 2046817 4093634 8187268