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12020202 = 232679967
BaseRepresentation
bin101101110110…
…100111101010
3211121200121200
4231312213222
511034121302
61105345030
7204112215
oct55664752
924550550
1012020202
11686aa57
124038176
13264b25c
14184c77c
1510c681c
hexb769ea

12020202 has 24 divisors (see below), whose sum is σ = 26435136. Its totient is φ = 3946536.

The previous prime is 12020161. The next prime is 12020209. The reversal of 12020202 is 20202021.

It is a super-2 number, since 2×120202022 = 288970512241608, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

12020202 is a modest number, since divided by 20202 gives 12 as remainder.

It is not an unprimeable number, because it can be changed into a prime (12020209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3778 + ... + 6189.

It is an arithmetic number, because the mean of its divisors is an integer number (1101464).

Almost surely, 212020202 is an apocalyptic number.

12020202 is an abundant number, since it is smaller than the sum of its proper divisors (14414934).

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

12020202 is a wasteful number, since it uses less digits than its factorization.

12020202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10042 (or 10039 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 12020202 is about 3467.0162964717. The cubic root of 12020202 is about 229.0712515772.

Adding to 12020202 its reverse (20202021), we get a palindrome (32222223).

The spelling of 12020202 in words is "twelve million, twenty thousand, two hundred two".

Divisors: 1 2 3 6 9 18 67 134 201 402 603 1206 9967 19934 29901 59802 89703 179406 667789 1335578 2003367 4006734 6010101 12020202