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2113132220 = 225472248013
BaseRepresentation
bin111110111110011…
…1101011010111100
312110021020020110022
41331330331122330
513311430212340
6545403431312
7103236220223
oct17574753274
95407206408
102113132220
11994898571
124ab825538
13278a382c4
14160907cba
15c57ad3b5
hex7df3d6bc

2113132220 has 24 divisors (see below), whose sum is σ = 4531996224. Its totient is φ = 827268416.

The previous prime is 2113132213. The next prime is 2113132223. The reversal of 2113132220 is 222313112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113132223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1123067 + ... + 1124946.

It is an arithmetic number, because the mean of its divisors is an integer number (188833176).

Almost surely, 22113132220 is an apocalyptic number.

2113132220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2113132220 is an abundant number, since it is smaller than the sum of its proper divisors (2418864004).

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

2113132220 is a wasteful number, since it uses less digits than its factorization.

2113132220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2248069 (or 2248067 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2113132220 is about 45968.8179095352. The cubic root of 2113132220 is about 1283.2429608968.

Adding to 2113132220 its reverse (222313112), we get a palindrome (2335445332).

The spelling of 2113132220 in words is "two billion, one hundred thirteen million, one hundred thirty-two thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 47 94 188 235 470 940 2248013 4496026 8992052 11240065 22480130 44960260 105656611 211313222 422626444 528283055 1056566110 2113132220