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2128373205 = 35753382457
BaseRepresentation
bin111111011011100…
…0110010111010101
312111022220120011020
41332313012113111
513324330420310
6551110231353
7103512605460
oct17667062725
95438816136
102128373205
119a2458322
124b4955559
1327bc4353a
141629542d7
15c6cbe170
hex7edc65d5

2128373205 has 32 divisors (see below), whose sum is σ = 3965324544. Its totient is φ = 954610176.

The previous prime is 2128373189. The next prime is 2128373209. The reversal of 2128373205 is 5023738212.

It is not a de Polignac number, because 2128373205 - 24 = 2128373189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2128373209) 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, 185664 + ... + 196793.

It is an arithmetic number, because the mean of its divisors is an integer number (123916392).

Almost surely, 22128373205 is an apocalyptic number.

It is an amenable number.

2128373205 is a deficient number, since it is larger than the sum of its proper divisors (1836951339).

2128373205 is a wasteful number, since it uses less digits than its factorization.

2128373205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382525.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 2128373205 is about 46134.2953235443. The cubic root of 2128373205 is about 1286.3207070602.

The spelling of 2128373205 in words is "two billion, one hundred twenty-eight million, three hundred seventy-three thousand, two hundred five".

Divisors: 1 3 5 7 15 21 35 53 105 159 265 371 795 1113 1855 5565 382457 1147371 1912285 2677199 5736855 8031597 13385995 20270221 40157985 60810663 101351105 141891547 304053315 425674641 709457735 2128373205