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8144091 = 331072819
BaseRepresentation
bin11111000100010011011011
3120022202121000
4133010103123
54041102331
6450320043
7126136464
oct37042333
916282530
108144091
11466285a
122889023
1318c1bb7
14111dd6b
15aad0e6
hex7c44db

8144091 has 16 divisors (see below), whose sum is σ = 12182400. Its totient is φ = 5376744.

The previous prime is 8144083. The next prime is 8144111. The reversal of 8144091 is 1904418.

It is not a de Polignac number, because 8144091 - 23 = 8144083 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (8144011) 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 15 ways as a sum of consecutive naturals, for example, 1480 + ... + 4298.

It is an arithmetic number, because the mean of its divisors is an integer number (761400).

Almost surely, 28144091 is an apocalyptic number.

8144091 is a deficient number, since it is larger than the sum of its proper divisors (4038309).

8144091 is a wasteful number, since it uses less digits than its factorization.

8144091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2935 (or 2929 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 8144091 is about 2853.7853808582. The cubic root of 8144091 is about 201.1936205121.

The spelling of 8144091 in words is "eight million, one hundred forty-four thousand, ninety-one".

Divisors: 1 3 9 27 107 321 963 2819 2889 8457 25371 76113 301633 904899 2714697 8144091