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2827669681 = 31122974219
BaseRepresentation
bin1010100010001010…
…1101000010110001
321022001202111120201
42220202231002301
521242340412211
61144330435201
7130033536634
oct25042550261
97261674521
102827669681
1112211670a1
1266ab92b01
13360a97635
141cb787c1b
151183a30c1
hexa88ad0b1

2827669681 has 8 divisors (see below), whose sum is σ = 2921299200. Its totient is φ = 2734191120.

The previous prime is 2827669631. The next prime is 2827669693. The reversal of 2827669681 is 1869667282.

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 2827669681 - 215 = 2827636913 is a prime.

It is a super-2 number, since 2×28276696812 = 15991431649693283522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2827669631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 990 + ... + 75208.

It is an arithmetic number, because the mean of its divisors is an integer number (365162400).

Almost surely, 22827669681 is an apocalyptic number.

It is an amenable number.

2827669681 is a deficient number, since it is larger than the sum of its proper divisors (93629519).

2827669681 is a wasteful number, since it uses less digits than its factorization.

2827669681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75479.

The product of its digits is 3483648, while the sum is 55.

The square root of 2827669681 is about 53175.8373793963. The cubic root of 2827669681 is about 1414.0873104781.

The spelling of 2827669681 in words is "two billion, eight hundred twenty-seven million, six hundred sixty-nine thousand, six hundred eighty-one".

Divisors: 1 31 1229 38099 74219 2300789 91215151 2827669681