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104212180 = 2255210609
BaseRepresentation
bin1100011011000…
…10011011010100
321021002112020101
412031202123110
5203134242210
614201343444
72403534412
oct615423324
9237075211
10104212180
1153909176
122aa97b84
1318789b17
14dbaa2b2
159237a3a
hex63626d4

104212180 has 12 divisors (see below), whose sum is σ = 218845620. Its totient is φ = 41684864.

The previous prime is 104212133. The next prime is 104212183. The reversal of 104212180 is 81212401.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14227984 + 89984196 = 3772^2 + 9486^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104212183) 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 3 ways as a sum of consecutive naturals, for example, 2605285 + ... + 2605324.

It is an arithmetic number, because the mean of its divisors is an integer number (18237135).

Almost surely, 2104212180 is an apocalyptic number.

104212180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

104212180 is an abundant number, since it is smaller than the sum of its proper divisors (114633440).

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

104212180 is a wasteful number, since it uses less digits than its factorization.

104212180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5210618 (or 5210616 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 104212180 is about 10208.4367069596. The cubic root of 104212180 is about 470.5865319607.

Adding to 104212180 its reverse (81212401), we get a palindrome (185424581).

The spelling of 104212180 in words is "one hundred four million, two hundred twelve thousand, one hundred eighty".

Divisors: 1 2 4 5 10 20 5210609 10421218 20842436 26053045 52106090 104212180