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12200022 = 232677779
BaseRepresentation
bin101110100010…
…100001010110
3211221211021200
4232202201112
511110400042
61113253330
7205461402
oct56424126
924854250
1012200022
11698306a
124104246
1326b2063
141898102
15110ec4c
hexba2856

12200022 has 12 divisors (see below), whose sum is σ = 26433420. Its totient is φ = 4066668.

The previous prime is 12200011. The next prime is 12200029. The reversal of 12200022 is 22000221.

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

It is a junction number, because it is equal to n+sod(n) for n = 12199977 and 12200013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12200029) 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 5 ways as a sum of consecutive naturals, for example, 338872 + ... + 338907.

It is an arithmetic number, because the mean of its divisors is an integer number (2202785).

Almost surely, 212200022 is an apocalyptic number.

12200022 is an abundant number, since it is smaller than the sum of its proper divisors (14233398).

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

12200022 is a wasteful number, since it uses less digits than its factorization.

12200022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677787 (or 677784 counting only the distinct ones).

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

The square root of 12200022 is about 3492.8529886040. The cubic root of 12200022 is about 230.2078901725.

Adding to 12200022 its reverse (22000221), we get a palindrome (34200243).

The spelling of 12200022 in words is "twelve million, two hundred thousand, twenty-two".

Divisors: 1 2 3 6 9 18 677779 1355558 2033337 4066674 6100011 12200022