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20012303200 = 255243581753
BaseRepresentation
bin10010101000110100…
…111000001101100000
31220122200200100001211
4102220310320031200
5311441122200300
613105445035504
71305631525201
oct225064701540
956580610054
1020012303200
11853a47265a
123a660b5b94
131b6c0c4936
14d7bba95a8
157c1d9b4ba
hex4a8d38360

20012303200 has 72 divisors (see below), whose sum is σ = 49991284728. Its totient is φ = 7818746880.

The previous prime is 20012303111. The next prime is 20012303249. The reversal of 20012303200 is 230321002.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 256477 + ... + 325276.

It is an arithmetic number, because the mean of its divisors is an integer number (694323399).

Almost surely, 220012303200 is an apocalyptic number.

20012303200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20012303200 is an abundant number, since it is smaller than the sum of its proper divisors (29978981528).

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

20012303200 is a wasteful number, since it uses less digits than its factorization.

20012303200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581816 (or 581803 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 20012303200 its reverse (230321002), we get a palindrome (20242624202).

The spelling of 20012303200 in words is "twenty billion, twelve million, three hundred three thousand, two hundred".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 43 50 80 86 100 160 172 200 215 344 400 430 688 800 860 1075 1376 1720 2150 3440 4300 6880 8600 17200 34400 581753 1163506 2327012 2908765 4654024 5817530 9308048 11635060 14543825 18616096 23270120 25015379 29087650 46540240 50030758 58175300 93080480 100061516 116350600 125076895 200123032 232701200 250153790 400246064 465402400 500307580 625384475 800492128 1000615160 1250768950 2001230320 2501537900 4002460640 5003075800 10006151600 20012303200