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2012210860 = 2251112772019
BaseRepresentation
bin111011111101111…
…1110011010101100
312012020022220101011
41313323332122230
513110111221420
6531400355004
7100602336652
oct16773763254
95166286334
102012210860
11942927890
12481a75a64
13260b6131a
14151356dd2
15bb9c595a
hex77efe6ac

2012210860 has 48 divisors (see below), whose sum is σ = 4646154240. Its totient is φ = 725941440.

The previous prime is 2012210801. The next prime is 2012210861. The reversal of 2012210860 is 680122102.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (2012210861) 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, 8070 + ... + 63949.

It is an arithmetic number, because the mean of its divisors is an integer number (96794880).

Almost surely, 22012210860 is an apocalyptic number.

2012210860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2012210860 is an abundant number, since it is smaller than the sum of its proper divisors (2633943380).

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

2012210860 is a wasteful number, since it uses less digits than its factorization.

2012210860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72166 (or 72164 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 2012210860 is about 44857.6733681095. The cubic root of 2012210860 is about 1262.4799690970.

Adding to 2012210860 its reverse (680122102), we get a palindrome (2692332962).

The spelling of 2012210860 in words is "two billion, twelve million, two hundred ten thousand, eight hundred sixty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 127 220 254 508 635 1270 1397 2540 2794 5588 6985 13970 27940 72019 144038 288076 360095 720190 792209 1440380 1584418 3168836 3961045 7922090 9146413 15844180 18292826 36585652 45732065 91464130 100610543 182928260 201221086 402442172 503052715 1006105430 2012210860