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169886141 = 1018292029
BaseRepresentation
bin10100010000001…
…00000110111101
3102211200002222022
422020010012331
5321442324031
624505125525
74132002605
oct1210040675
9384602868
10169886141
1187994a77
1248a898a5
1329272559
14187c3c05
15edab97b
hexa2041bd

169886141 has 8 divisors (see below), whose sum is σ = 171859800. Its totient is φ = 167918400.

The previous prime is 169886131. The next prime is 169886149. The reversal of 169886141 is 141688961.

It can be written as a sum of positive squares in 4 ways, for example, as 131010916 + 38875225 = 11446^2 + 6235^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 169886141 - 214 = 169869757 is a prime.

It is a super-2 number, since 2×1698861412 = 57722601807743762, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 169886092 and 169886101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169886149) 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 7 ways as a sum of consecutive naturals, for example, 82715 + ... + 84743.

It is an arithmetic number, because the mean of its divisors is an integer number (21482475).

Almost surely, 2169886141 is an apocalyptic number.

It is an amenable number.

169886141 is a deficient number, since it is larger than the sum of its proper divisors (1973659).

169886141 is a wasteful number, since it uses less digits than its factorization.

169886141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2959.

The product of its digits is 82944, while the sum is 44.

The square root of 169886141 is about 13034.0377857362. The cubic root of 169886141 is about 553.8421235546.

The spelling of 169886141 in words is "one hundred sixty-nine million, eight hundred eighty-six thousand, one hundred forty-one".

Divisors: 1 101 829 2029 83729 204929 1682041 169886141