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2171076923 = 43390712923
BaseRepresentation
bin1000000101101000…
…0000000100111011
312121022021010122102
42001122000010323
513421243430143
6555233414015
7104541564221
oct20132000473
95538233572
102171076923
11a14575254
1250710a30b
13287a45902
141684acb11
15ca9070b8
hex8168013b

2171076923 has 8 divisors (see below), whose sum is σ = 2222307648. Its totient is φ = 2119879944.

The previous prime is 2171076889. The next prime is 2171076937. The reversal of 2171076923 is 3296701712.

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 2171076923 - 214 = 2171060539 is a prime.

It is a Duffinian number.

2171076923 is a modest number, since divided by 76923 gives 2171 as remainder.

It is not an unprimeable number, because it can be changed into a prime (2171076983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161540 + ... + 174462.

It is an arithmetic number, because the mean of its divisors is an integer number (277788456).

Almost surely, 22171076923 is an apocalyptic number.

2171076923 is a deficient number, since it is larger than the sum of its proper divisors (51230725).

2171076923 is a wasteful number, since it uses less digits than its factorization.

2171076923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16873.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 2171076923 is about 46594.8164820938. The cubic root of 2171076923 is about 1294.8667241087.

The spelling of 2171076923 in words is "two billion, one hundred seventy-one million, seventy-six thousand, nine hundred twenty-three".

Divisors: 1 43 3907 12923 168001 555689 50490161 2171076923