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20023210000 = 24543164591
BaseRepresentation
bin10010101001011110…
…011111000000010000
31220200110012110101101
4102221132133000100
5312001420210000
613110514514144
71306123322353
oct225136370020
956613173341
1020023210000
118545642042
123a69895954
131b71443171
14d7d40829a
157c2d02e6a
hex4a979f010

20023210000 has 100 divisors (see below), whose sum is σ = 50042781184. Its totient is φ = 7750800000.

The previous prime is 20023209967. The next prime is 20023210007. The reversal of 20023210000 is 1232002.

It is a tau number, because it is divible by the number of its divisors (100).

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 (20023210007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 277705 + ... + 342295.

Almost surely, 220023210000 is an apocalyptic number.

20023210000 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 20023210000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25021390592).

20023210000 is an abundant number, since it is smaller than the sum of its proper divisors (30019571184).

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

20023210000 is an equidigital number, since it uses as much as digits as its factorization.

20023210000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64650 (or 64629 counting only the distinct ones).

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

Adding to 20023210000 its reverse (1232002), we get a palindrome (20024442002).

The spelling of 20023210000 in words is "twenty billion, twenty-three million, two hundred ten thousand".

Divisors: 1 2 4 5 8 10 16 20 25 31 40 50 62 80 100 124 125 155 200 248 250 310 400 496 500 620 625 775 1000 1240 1250 1550 2000 2480 2500 3100 3875 5000 6200 7750 10000 12400 15500 19375 31000 38750 62000 64591 77500 129182 155000 258364 310000 322955 516728 645910 1033456 1291820 1614775 2002321 2583640 3229550 4004642 5167280 6459100 8009284 8073875 10011605 12918200 16018568 16147750 20023210 25836400 32037136 32295500 40046420 40369375 50058025 64591000 80092840 80738750 100116050 129182000 160185680 161477500 200232100 250290125 322955000 400464200 500580250 645910000 800928400 1001160500 1251450625 2002321000 2502901250 4004642000 5005802500 10011605000 20023210000