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23203430300 = 2252896773851
BaseRepresentation
bin10101100111000010…
…000011111110011100
32012220002100101111102
4111213002003332130
5340010034232200
614354242012232
71451000621561
oct254702037634
965802311442
1023203430300
119927805686
1245b6947078
13225a27791b
1411a1924868
1590c0e56d5
hex567083f9c

23203430300 has 72 divisors (see below), whose sum is σ = 51005641680. Its totient is φ = 9161152000.

The previous prime is 23203430273. The next prime is 23203430303. The reversal of 23203430300 is 303430232.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23203430303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6023375 + ... + 6027225.

It is an arithmetic number, because the mean of its divisors is an integer number (708411690).

Almost surely, 223203430300 is an apocalyptic number.

23203430300 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 23203430300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25502820840).

23203430300 is an abundant number, since it is smaller than the sum of its proper divisors (27802211380).

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

23203430300 is a wasteful number, since it uses less digits than its factorization.

23203430300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4631 (or 4624 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 20.

Adding to 23203430300 its reverse (303430232), we get a palindrome (23506860532).

The spelling of 23203430300 in words is "twenty-three billion, two hundred three million, four hundred thirty thousand, three hundred".

Divisors: 1 2 4 5 10 20 25 50 89 100 178 356 445 677 890 1354 1780 2225 2708 3385 3851 4450 6770 7702 8900 13540 15404 16925 19255 33850 38510 60253 67700 77020 96275 120506 192550 241012 301265 342739 385100 602530 685478 1205060 1370956 1506325 1713695 2607127 3012650 3427390 5214254 6025300 6854780 8568475 10428508 13035635 17136950 26071270 34273900 52142540 65178175 130356350 232034303 260712700 464068606 928137212 1160171515 2320343030 4640686060 5800857575 11601715150 23203430300