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18960712272100 = 22524354392
BaseRepresentation
bin1000100111110101000101…
…00001010000100011100100
32111010121220122020201022101
410103322202201100203210
54441123014320201400
6104154233031141444
73664603061055034
oct423724241204344
974117818221271
1018960712272100
116050213855735
122162868214884
13a76cab6b0b31
144979bc0978c4
1522d32943156a
hex113ea28508e4

18960712272100 has 27 divisors (see below), whose sum is σ = 41144840120937. Its totient is φ = 7584267491280.

The previous prime is 18960712272043. The next prime is 18960712272101. The reversal of 18960712272100 is 127221706981.

The square root of 18960712272100 is 4354390.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 6825856417956 + 12134855854144 = 2612634^2 + 3483512^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18960712272101) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 43326181 + ... + 43761619.

Almost surely, 218960712272100 is an apocalyptic number.

18960712272100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18960712272100 is the 4354390-th square number.

It is an amenable number.

18960712272100 is an abundant number, since it is smaller than the sum of its proper divisors (22184127848837).

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

18960712272100 is an frugal number, since it uses more digits than its factorization.

18960712272100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870892 (or 435446 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 46.

The spelling of 18960712272100 in words is "eighteen trillion, nine hundred sixty billion, seven hundred twelve million, two hundred seventy-two thousand, one hundred".

Divisors: 1 2 4 5 10 20 25 50 100 435439 870878 1741756 2177195 4354390 8708780 10885975 21771950 43543900 189607122721 379214245442 758428490884 948035613605 1896071227210 3792142454420 4740178068025 9480356136050 18960712272100