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23021020000 = 255411269389
BaseRepresentation
bin10101011100001010…
…001110001101100000
32012102101002222121101
4111130022032031200
5334121340120000
614324204204144
71443324304246
oct253412161540
965371088541
1023021020000
119843847070
124565839654
13222b53b934
141185600796
158eb0b2e6a
hex55c28e360

23021020000 has 240 divisors, whose sum is σ = 62172910800. Its totient is φ = 8318720000.

The previous prime is 23021019947. The next prime is 23021020003. The reversal of 23021020000 is 2012032.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23021020003) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 59179806 + ... + 59180194.

It is an arithmetic number, because the mean of its divisors is an integer number (259053795).

Almost surely, 223021020000 is an apocalyptic number.

23021020000 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 23021020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31086455400).

23021020000 is an abundant number, since it is smaller than the sum of its proper divisors (39151890800).

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

23021020000 is a wasteful number, since it uses less digits than its factorization.

23021020000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699 (or 676 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

Adding to 23021020000 its reverse (2012032), we get a palindrome (23023032032).

The spelling of 23021020000 in words is "twenty-three billion, twenty-one million, twenty thousand".