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8838181 = 1117151313
BaseRepresentation
bin100001101101…
…110000100101
3121122000201001
4201231300211
54230310211
6513233301
7135060202
oct41556045
917560631
108838181
114a97290
122b62831
131aa5ac1
141260ca9
15b98ac1
hex86dc25

8838181 has 16 divisors (see below), whose sum is σ = 10309248. Its totient is φ = 7488000.

The previous prime is 8838161. The next prime is 8838199. The reversal of 8838181 is 1818388.

It is a 5-Lehmer number, since φ(8838181) divides (8838181-1)5.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-8838181 is a prime.

It is a super-2 number, since 2×88381812 = 156226886777522, which contains 22 as substring.

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 8838181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8838101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28081 + ... + 28393.

It is an arithmetic number, because the mean of its divisors is an integer number (644328).

Almost surely, 28838181 is an apocalyptic number.

It is an amenable number.

8838181 is a deficient number, since it is larger than the sum of its proper divisors (1471067).

8838181 is a wasteful number, since it uses less digits than its factorization.

8838181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492.

The product of its digits is 12288, while the sum is 37.

The square root of 8838181 is about 2972.9078357729. The cubic root of 8838181 is about 206.7541793211.

The spelling of 8838181 in words is "eight million, eight hundred thirty-eight thousand, one hundred eighty-one".

Divisors: 1 11 17 151 187 313 1661 2567 3443 5321 28237 47263 58531 519893 803471 8838181