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2128392415 = 54727193331
BaseRepresentation
bin111111011011100…
…1011000011011111
312111022221112111201
41332313023003133
513324332024130
6551110500331
7103513015462
oct17667130337
95438845451
102128392415
119a24707a6
124b49646a7
1327bc4c1c6
1416295b2d9
15c6cc4bca
hex7edcb0df

2128392415 has 16 divisors (see below), whose sum is σ = 2610155520. Its totient is φ = 1665372960.

The previous prime is 2128392359. The next prime is 2128392421. The reversal of 2128392415 is 5142938212.

It is a de Polignac number, because none of the positive numbers 2k-2128392415 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 637300 + ... + 640630.

It is an arithmetic number, because the mean of its divisors is an integer number (163134720).

Almost surely, 22128392415 is an apocalyptic number.

2128392415 is a deficient number, since it is larger than the sum of its proper divisors (481763105).

2128392415 is a wasteful number, since it uses less digits than its factorization.

2128392415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6102.

The product of its digits is 34560, while the sum is 37.

The square root of 2128392415 is about 46134.5035196002. The cubic root of 2128392415 is about 1286.3245770185.

The spelling of 2128392415 in words is "two billion, one hundred twenty-eight million, three hundred ninety-two thousand, four hundred fifteen".

Divisors: 1 5 47 235 2719 3331 13595 16655 127793 156557 638965 782785 9056989 45284945 425678483 2128392415