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23130220000 = 25541960869
BaseRepresentation
bin10101100010101010…
…110010010111100000
32012200222120220211211
4111202222302113200
5334332314020000
614343104515504
71446121424506
oct254252622740
965628526754
1023130220000
11989a4516a8
12459631bb94
132248053b14
141195d08676
159059837ba
hex562ab25e0

23130220000 has 120 divisors (see below), whose sum is σ = 59899732200. Its totient is φ = 8764992000.

The previous prime is 23130219971. The next prime is 23130220007. The reversal of 23130220000 is 2203132.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23130220007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 349566 + ... + 410434.

It is an arithmetic number, because the mean of its divisors is an integer number (499164435).

Almost surely, 223130220000 is an apocalyptic number.

23130220000 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 23130220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29949866100).

23130220000 is an abundant number, since it is smaller than the sum of its proper divisors (36769512200).

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

23130220000 is an equidigital number, since it uses as much as digits as its factorization.

23130220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60918 (or 60895 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 23130220000 its reverse (2203132), we get a palindrome (23132423132).

The spelling of 23130220000 in words is "twenty-three billion, one hundred thirty million, two hundred twenty thousand".

Divisors: 1 2 4 5 8 10 16 19 20 25 32 38 40 50 76 80 95 100 125 152 160 190 200 250 304 380 400 475 500 608 625 760 800 950 1000 1250 1520 1900 2000 2375 2500 3040 3800 4000 4750 5000 7600 9500 10000 11875 15200 19000 20000 23750 38000 47500 60869 76000 95000 121738 190000 243476 304345 380000 486952 608690 973904 1156511 1217380 1521725 1947808 2313022 2434760 3043450 4626044 4869520 5782555 6086900 7608625 9252088 9739040 11565110 12173800 15217250 18504176 23130220 24347600 28912775 30434500 37008352 38043125 46260440 48695200 57825550 60869000 76086250 92520880 115651100 121738000 144563875 152172500 185041760 231302200 243476000 289127750 304345000 462604400 578255500 608690000 722819375 925208800 1156511000 1217380000 1445638750 2313022000 2891277500 4626044000 5782555000 11565110000 23130220000