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20302200 = 23325211279
BaseRepresentation
bin100110101110…
…0100101111000
31102012110101100
41031130211320
520144132300
62003051400
7334365042
oct115344570
942173340
1020302200
1110507386
126970b60
13428ab49
1429a6a92
151bb0700
hex135c978

20302200 has 72 divisors (see below), whose sum is σ = 68187600. Its totient is φ = 5413440.

The previous prime is 20302189. The next prime is 20302207. The reversal of 20302200 is 220302.

20302200 is nontrivially palindromic in base 14.

It is a tau number, because it is divible by the number of its divisors (72).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20302207) 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 17 ways as a sum of consecutive naturals, for example, 3840 + ... + 7439.

It is an arithmetic number, because the mean of its divisors is an integer number (947050).

Almost surely, 220302200 is an apocalyptic number.

20302200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20302200 is an abundant number, since it is smaller than the sum of its proper divisors (47885400).

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

20302200 is a wasteful number, since it uses less digits than its factorization.

20302200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11301 (or 11289 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 9.

The square root of 20302200 is about 4505.7962670321. The cubic root of 20302200 is about 272.8020946225.

Adding to 20302200 its reverse (220302), we get a palindrome (20522502).

It can be divided in two parts, 20302 and 200, that added together give a palindrome (20502).

The spelling of 20302200 in words is "twenty million, three hundred two thousand, two hundred".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 18 20 24 25 30 36 40 45 50 60 72 75 90 100 120 150 180 200 225 300 360 450 600 900 1800 11279 22558 33837 45116 56395 67674 90232 101511 112790 135348 169185 203022 225580 270696 281975 338370 406044 451160 507555 563950 676740 812088 845925 1015110 1127900 1353480 1691850 2030220 2255800 2537775 3383700 4060440 5075550 6767400 10151100 20302200