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2068775620 = 225103438781
BaseRepresentation
bin111101101001111…
…0000001011000100
312100011202200122021
41323103300023010
513214101304440
6541141012524
7102160205542
oct17323601304
95304680567
102068775620
1197185181a
124989b4144
1326c7a77b2
14158a7cd92
15c194a84a
hex7b4f02c4

2068775620 has 12 divisors (see below), whose sum is σ = 4344428844. Its totient is φ = 827510240.

The previous prime is 2068775617. The next prime is 2068775629. The reversal of 2068775620 is 265778602.

It can be written as a sum of positive squares in 2 ways, for example, as 1599360064 + 469415556 = 39992^2 + 21666^2 .

It is not an unprimeable number, because it can be changed into a prime (2068775629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51719371 + ... + 51719410.

It is an arithmetic number, because the mean of its divisors is an integer number (362035737).

Almost surely, 22068775620 is an apocalyptic number.

2068775620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2068775620 is an abundant number, since it is smaller than the sum of its proper divisors (2275653224).

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

2068775620 is a wasteful number, since it uses less digits than its factorization.

2068775620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103438790 (or 103438788 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 43.

The square root of 2068775620 is about 45483.7951362900. The cubic root of 2068775620 is about 1274.2005743483.

The spelling of 2068775620 in words is "two billion, sixty-eight million, seven hundred seventy-five thousand, six hundred twenty".

Divisors: 1 2 4 5 10 20 103438781 206877562 413755124 517193905 1034387810 2068775620