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12020232 = 233771549
BaseRepresentation
bin101101110110…
…101000001000
3211121200122210
4231312220020
511034121412
61105345120
7204112260
oct55665010
924550583
1012020232
11686aa84
1240381a0
13264b283
14184c7a0
1510c683c
hexb76a08

12020232 has 32 divisors (see below), whose sum is σ = 34344000. Its totient is φ = 3434304.

The previous prime is 12020231. The next prime is 12020249. The reversal of 12020232 is 23202021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (12020231) 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, 35607 + ... + 35942.

It is an arithmetic number, because the mean of its divisors is an integer number (1073250).

Almost surely, 212020232 is an apocalyptic number.

12020232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12020232 is an abundant number, since it is smaller than the sum of its proper divisors (22323768).

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

12020232 is a wasteful number, since it uses less digits than its factorization.

12020232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71565 (or 71561 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 12020232 is about 3467.0206229557. The cubic root of 12020232 is about 229.0714421490.

Adding to 12020232 its reverse (23202021), we get a palindrome (35222253).

It can be divided in two parts, 1202023 and 2, that added together give a triangular number (1202025 = T1550).

The spelling of 12020232 in words is "twelve million, twenty thousand, two hundred thirty-two".

Divisors: 1 2 3 4 6 7 8 12 14 21 24 28 42 56 84 168 71549 143098 214647 286196 429294 500843 572392 858588 1001686 1502529 1717176 2003372 3005058 4006744 6010116 12020232