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20300628700 = 225211109169313
BaseRepresentation
bin10010111010000000…
…110000001011011100
31221101210012210022001
4102322000300023130
5313033430104300
613154224532044
71316032332262
oct227200601334
957353183261
1020300628700
1186781a28a0
123b26781024
131bb6a65941
14da81c0432
157dc35116a
hex4ba0302dc

20300628700 has 72 divisors (see below), whose sum is σ = 48498302160. Its totient is φ = 7314278400.

The previous prime is 20300628671. The next prime is 20300628703. The reversal of 20300628700 is 782600302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20300628703) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35244 + ... + 204556.

It is an arithmetic number, because the mean of its divisors is an integer number (673587530).

Almost surely, 220300628700 is an apocalyptic number.

20300628700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20300628700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24249151080).

20300628700 is an abundant number, since it is smaller than the sum of its proper divisors (28197673460).

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

20300628700 is a wasteful number, since it uses less digits than its factorization.

20300628700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169447 (or 169440 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The spelling of 20300628700 in words is "twenty billion, three hundred million, six hundred twenty-eight thousand, seven hundred".

Divisors: 1 2 4 5 10 11 20 22 25 44 50 55 100 109 110 218 220 275 436 545 550 1090 1100 1199 2180 2398 2725 4796 5450 5995 10900 11990 23980 29975 59950 119900 169313 338626 677252 846565 1693130 1862443 3386260 3724886 4232825 7449772 8465650 9312215 16931300 18455117 18624430 36910234 37248860 46561075 73820468 92275585 93122150 184551170 186244300 203006287 369102340 406012574 461377925 812025148 922755850 1015031435 1845511700 2030062870 4060125740 5075157175 10150314350 20300628700