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20010201188 = 22431675991163
BaseRepresentation
bin10010101000101100…
…110111000001100100
31220122112201112122112
4102220230313001210
5311440102414223
613105332020152
71305604621655
oct225054670144
956575645575
1020010201188
11853926735a
123a65461658
131b6b839c43
14d7b7bd52c
157c1ad3778
hex4a8b37064

20010201188 has 48 divisors (see below), whose sum is σ = 36138009600. Its totient is φ = 9689350944.

The previous prime is 20010201187. The next prime is 20010201199. The reversal of 20010201188 is 88110201002.

It is a happy number.

It is a super-2 number, since 2×200102011882 (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20010201187) 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, 17205095 + ... + 17206257.

It is an arithmetic number, because the mean of its divisors is an integer number (752875200).

Almost surely, 220010201188 is an apocalyptic number.

It is an amenable number.

20010201188 is a deficient number, since it is larger than the sum of its proper divisors (16127808412).

20010201188 is a wasteful number, since it uses less digits than its factorization.

20010201188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1976 (or 1974 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 23.

The spelling of 20010201188 in words is "twenty billion, ten million, two hundred one thousand, one hundred eighty-eight".

Divisors: 1 2 4 43 86 167 172 334 599 668 1163 1198 2326 2396 4652 7181 14362 25757 28724 50009 51514 100018 100033 103028 194221 200036 200066 388442 400132 696637 776884 1393274 2786548 4301419 8351503 8602838 16703006 17205676 29955391 33406012 59910782 116338379 119821564 232676758 465353516 5002550297 10005100594 20010201188