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2128369641 = 31113163737
BaseRepresentation
bin111111011011100…
…0101011111101001
312111022220101021020
41332313011133221
513324330312031
6551110203053
7103512562206
oct17667053751
95438811236
102128369641
119a2455682
124b4953489
1327bc41a28
14162952cad
15c6cbd096
hex7edc57e9

2128369641 has 8 divisors (see below), whose sum is σ = 2838125664. Its totient is φ = 1418763360.

The previous prime is 2128369603. The next prime is 2128369651. The reversal of 2128369641 is 1469638212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2128369641 - 210 = 2128368617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2128369593 and 2128369602.

It is not an unprimeable number, because it can be changed into a prime (2128369651) 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, 1525 + ... + 65261.

It is an arithmetic number, because the mean of its divisors is an integer number (354765708).

Almost surely, 22128369641 is an apocalyptic number.

It is an amenable number.

2128369641 is a deficient number, since it is larger than the sum of its proper divisors (709756023).

2128369641 is a wasteful number, since it uses less digits than its factorization.

2128369641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74871.

The product of its digits is 124416, while the sum is 42.

The square root of 2128369641 is about 46134.2566971659. The cubic root of 2128369641 is about 1286.3199890706.

The spelling of 2128369641 in words is "two billion, one hundred twenty-eight million, three hundred sixty-nine thousand, six hundred forty-one".

Divisors: 1 3 11131 33393 63737 191211 709456547 2128369641