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201200220 = 223351328661
BaseRepresentation
bin10111111111000…
…01001001011100
3112000121000211000
423333201021130
5403001401340
631544230300
74662113364
oct1377411134
9460530730
10201200220
11a3632781
125746b390
13328b76b0
141ca159a4
15129e4d30
hexbfe125c

201200220 has 96 divisors (see below), whose sum is σ = 674130240. Its totient is φ = 49524480.

The previous prime is 201200183. The next prime is 201200221. The reversal of 201200220 is 22002102.

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 (201200221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7311 + ... + 21350.

It is an arithmetic number, because the mean of its divisors is an integer number (7022190).

Almost surely, 2201200220 is an apocalyptic number.

201200220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201200220 is an abundant number, since it is smaller than the sum of its proper divisors (472930020).

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

201200220 is a wasteful number, since it uses less digits than its factorization.

201200220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28692 (or 28684 counting only the distinct ones).

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

The square root of 201200220 is about 14184.5063361401. The cubic root of 201200220 is about 585.9710368644.

Adding to 201200220 its reverse (22002102), we get a palindrome (223202322).

The spelling of 201200220 in words is "two hundred one million, two hundred thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 9 10 12 13 15 18 20 26 27 30 36 39 45 52 54 60 65 78 90 108 117 130 135 156 180 195 234 260 270 351 390 468 540 585 702 780 1170 1404 1755 2340 3510 7020 28661 57322 85983 114644 143305 171966 257949 286610 343932 372593 429915 515898 573220 745186 773847 859830 1031796 1117779 1289745 1490372 1547694 1719660 1862965 2235558 2579490 3095388 3353337 3725930 3869235 4471116 5158980 5588895 6706674 7451860 7738470 10060011 11177790 13413348 15476940 16766685 20120022 22355580 33533370 40240044 50300055 67066740 100600110 201200220