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2138832620 = 225106941631
BaseRepresentation
bin111111101111011…
…1111111011101100
312112001120221202222
41333132333323230
513340020120440
6552122334512
7104000530421
oct17736777354
95461527688
102138832620
119a8351671
124b835a438
13281166242
141640b7d48
15c7b882b5
hex7f7bfeec

2138832620 has 12 divisors (see below), whose sum is σ = 4491548544. Its totient is φ = 855533040.

The previous prime is 2138832593. The next prime is 2138832673. The reversal of 2138832620 is 262388312.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53470796 + ... + 53470835.

It is an arithmetic number, because the mean of its divisors is an integer number (374295712).

Almost surely, 22138832620 is an apocalyptic number.

2138832620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2138832620 is an abundant number, since it is smaller than the sum of its proper divisors (2352715924).

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

2138832620 is a wasteful number, since it uses less digits than its factorization.

2138832620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106941640 (or 106941638 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 2138832620 is about 46247.5147440379. The cubic root of 2138832620 is about 1288.4243767991.

The spelling of 2138832620 in words is "two billion, one hundred thirty-eight million, eight hundred thirty-two thousand, six hundred twenty".

Divisors: 1 2 4 5 10 20 106941631 213883262 427766524 534708155 1069416310 2138832620