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2012210886 = 237374330113
BaseRepresentation
bin111011111101111…
…1110011011000110
312012020022220102010
41313323332123012
513110111222021
6531400355050
7100602340020
oct16773763306
95166286363
102012210886
11942927904
12481a75a86
13260b6133a
14151357010
15bb9c5976
hex77efe6c6

2012210886 has 64 divisors (see below), whose sum is σ = 4833658368. Its totient is φ = 546352128.

The previous prime is 2012210873. The next prime is 2012210887. The reversal of 2012210886 is 6880122102.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012210887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51766 + ... + 81878.

It is an arithmetic number, because the mean of its divisors is an integer number (75525912).

Almost surely, 22012210886 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2012210886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2416829184).

2012210886 is an abundant number, since it is smaller than the sum of its proper divisors (2821447482).

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

2012210886 is a wasteful number, since it uses less digits than its factorization.

2012210886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30205.

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 2012210886 is about 44857.6736579150. The cubic root of 2012210886 is about 1262.4799745345.

Adding to 2012210886 its reverse (6880122102), we get a palindrome (8892332988).

The spelling of 2012210886 in words is "two billion, twelve million, two hundred ten thousand, eight hundred eighty-six".

Divisors: 1 2 3 6 7 14 21 37 42 43 74 86 111 129 222 258 259 301 518 602 777 903 1554 1591 1806 3182 4773 9546 11137 22274 30113 33411 60226 66822 90339 180678 210791 421582 632373 1114181 1264746 1294859 2228362 2589718 3342543 3884577 6685086 7769154 7799267 9064013 15598534 18128026 23397801 27192039 46795602 47909783 54384078 95819566 143729349 287458698 335368481 670736962 1006105443 2012210886