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12160218 = 237419691
BaseRepresentation
bin101110011000…
…110011011010
3211212210200110
4232120303122
511103111333
61112345150
7205234350
oct56306332
924783613
1012160218
116956174
1240a51b6
132699bc5
1418877d0
151103063
hexb98cda

12160218 has 32 divisors (see below), whose sum is σ = 27901440. Its totient is φ = 3461040.

The previous prime is 12160217. The next prime is 12160223. The reversal of 12160218 is 81206121.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 12160194 and 12160203.

It is not an unprimeable number, because it can be changed into a prime (12160217) 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, 17253 + ... + 17943.

It is an arithmetic number, because the mean of its divisors is an integer number (871920).

Almost surely, 212160218 is an apocalyptic number.

12160218 is an abundant number, since it is smaller than the sum of its proper divisors (15741222).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12160218 is a wasteful number, since it uses less digits than its factorization.

12160218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 12160218 is about 3487.1504125862. The cubic root of 12160218 is about 229.9572573377.

Adding to 12160218 its reverse (81206121), we get a palindrome (93366339).

The spelling of 12160218 in words is "twelve million, one hundred sixty thousand, two hundred eighteen".

Divisors: 1 2 3 6 7 14 21 42 419 691 838 1257 1382 2073 2514 2933 4146 4837 5866 8799 9674 14511 17598 29022 289529 579058 868587 1737174 2026703 4053406 6080109 12160218