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2820068671 = 71423283111
BaseRepresentation
bin1010100000010110…
…1101010100111111
321021112110022221211
42220011231110333
521233414144141
61143455505251
7126612121360
oct25005552477
97245408854
102820068671
111217945372
12668528227
1335c3359b4
141ca769b67
151178a0d81
hexa816d53f

2820068671 has 8 divisors (see below), whose sum is σ = 3225211904. Its totient is φ = 2415494520.

The previous prime is 2820068651. The next prime is 2820068687. The reversal of 2820068671 is 1768600282.

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

It is a cyclic number.

It is not a de Polignac number, because 2820068671 - 213 = 2820060479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2820068651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131595 + ... + 151516.

It is an arithmetic number, because the mean of its divisors is an integer number (403151488).

Almost surely, 22820068671 is an apocalyptic number.

2820068671 is a deficient number, since it is larger than the sum of its proper divisors (405143233).

2820068671 is a wasteful number, since it uses less digits than its factorization.

2820068671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284541.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 2820068671 is about 53104.3187603419. The cubic root of 2820068671 is about 1412.8191122377.

The spelling of 2820068671 in words is "two billion, eight hundred twenty million, sixty-eight thousand, six hundred seventy-one".

Divisors: 1 7 1423 9961 283111 1981777 402866953 2820068671