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10123012000 = 25538330491
BaseRepresentation
bin10010110110110000…
…01110011110100000
3222010111020021212101
421123120032132200
5131212442341000
64352255140144
7505600116343
oct113330163640
928114207771
1010123012000
1143251a3822
121b66214654
13c5432a33a
146c062445a
153e3aaae6a
hex25b60e7a0

10123012000 has 96 divisors (see below), whose sum is σ = 25172731584. Its totient is φ = 4000288000.

The previous prime is 10123011973. The next prime is 10123012007. The reversal of 10123012000 is 21032101.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (10123012007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316755 + ... + 347245.

It is an arithmetic number, because the mean of its divisors is an integer number (262215954).

Almost surely, 210123012000 is an apocalyptic number.

10123012000 is a gapful number since it is divisible by the number (10) 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 10123012000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12586365792).

10123012000 is an abundant number, since it is smaller than the sum of its proper divisors (15049719584).

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

10123012000 is an equidigital number, since it uses as much as digits as its factorization.

10123012000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30599 (or 30581 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 10123012000 its reverse (21032101), we get a palindrome (10144044101).

The spelling of 10123012000 in words is "ten billion, one hundred twenty-three million, twelve thousand".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 80 83 100 125 160 166 200 250 332 400 415 500 664 800 830 1000 1328 1660 2000 2075 2656 3320 4000 4150 6640 8300 10375 13280 16600 20750 30491 33200 41500 60982 66400 83000 121964 152455 166000 243928 304910 332000 487856 609820 762275 975712 1219640 1524550 2439280 2530753 3049100 3811375 4878560 5061506 6098200 7622750 10123012 12196400 12653765 15245500 20246024 24392800 25307530 30491000 40492048 50615060 60982000 63268825 80984096 101230120 121964000 126537650 202460240 253075300 316344125 404920480 506150600 632688250 1012301200 1265376500 2024602400 2530753000 5061506000 10123012000