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20310232200 = 2335247720221
BaseRepresentation
bin10010111010100101…
…011000110010001000
31221102110021200211020
4102322211120302020
5313043404412300
613155210432440
71316210060646
oct227245306210
957373250736
1020310232200
118682662075
123b29a32720
131bb8a48b9b
14da95a0196
157dd0eb8a0
hex4ba958c88

20310232200 has 96 divisors (see below), whose sum is σ = 64301420160. Its totient is φ = 5300819200.

The previous prime is 20310232181. The next prime is 20310232249. The reversal of 20310232200 is 223201302.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20310232200.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 331911 + ... + 388310.

It is an arithmetic number, because the mean of its divisors is an integer number (669806460).

Almost surely, 220310232200 is an apocalyptic number.

20310232200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20310232200 is an abundant number, since it is smaller than the sum of its proper divisors (43991187960).

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

20310232200 is a wasteful number, since it uses less digits than its factorization.

20310232200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720287 (or 720278 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 20310232200 its reverse (223201302), we get a palindrome (20533433502).

The spelling of 20310232200 in words is "twenty billion, three hundred ten million, two hundred thirty-two thousand, two hundred".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 25 30 40 47 50 60 75 94 100 120 141 150 188 200 235 282 300 376 470 564 600 705 940 1128 1175 1410 1880 2350 2820 3525 4700 5640 7050 9400 14100 28200 720221 1440442 2160663 2880884 3601105 4321326 5761768 7202210 8642652 10803315 14404420 17285304 18005525 21606630 28808840 33850387 36011050 43213260 54016575 67700774 72022100 86426520 101551161 108033150 135401548 144044200 169251935 203102322 216066300 270803096 338503870 406204644 432132600 507755805 677007740 812409288 846259675 1015511610 1354015480 1692519350 2031023220 2538779025 3385038700 4062046440 5077558050 6770077400 10155116100 20310232200