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20230781123200 = 275271187947389
BaseRepresentation
bin1001001100110010110001…
…00001011011101010000000
32122122001011220212021010011
410212121120201123222000
510122430114431420300
6111005520442314304
74155424421140564
oct446313041335200
978561156767104
1020230781123200
11649a90a58a72a
122328a3b7b8994
13b399a676ba7b
144dd2643db6a4
152513b07cceba
hex12665885ba80

20230781123200 has 192 divisors, whose sum is σ = 50708285712000. Its totient is φ = 7973921894400.

The previous prime is 20230781123183. The next prime is 20230781123239. The reversal of 20230781123200 is 232118703202.

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, 426885106 + ... + 426932494.

It is an arithmetic number, because the mean of its divisors is an integer number (264105654750).

Almost surely, 220230781123200 is an apocalyptic number.

20230781123200 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 20230781123200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25354142856000).

20230781123200 is an abundant number, since it is smaller than the sum of its proper divisors (30477504588800).

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

20230781123200 is a wasteful number, since it uses less digits than its factorization.

20230781123200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49363 (or 49346 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

Adding to 20230781123200 its reverse (232118703202), we get a palindrome (20462899826402).

The spelling of 20230781123200 in words is "twenty trillion, two hundred thirty billion, seven hundred eighty-one million, one hundred twenty-three thousand, two hundred".