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9999872 = 2919531
BaseRepresentation
bin100110001001…
…011000000000
3200211001020122
4212021120000
510024443442
6554155412
7150666101
oct46113000
920731218
109999872
115710063
123422b68
1320c17ac
1414843a8
15d27dd2
hex989600

9999872 has 20 divisors (see below), whose sum is σ = 19981236. Its totient is φ = 4999680.

The previous prime is 9999863. The next prime is 9999877. The reversal of 9999872 is 2789999.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9999877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9254 + ... + 10277.

Almost surely, 29999872 is an apocalyptic number.

It is an amenable number.

9999872 is a deficient number, since it is larger than the sum of its proper divisors (9981364).

9999872 is an equidigital number, since it uses as much as digits as its factorization.

9999872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19549 (or 19533 counting only the distinct ones).

The product of its digits is 734832, while the sum is 53.

The square root of 9999872 is about 3162.2574215266. The cubic root of 9999872 is about 215.4425497738.

The spelling of 9999872 in words is "nine million, nine hundred ninety-nine thousand, eight hundred seventy-two".

Divisors: 1 2 4 8 16 32 64 128 256 512 19531 39062 78124 156248 312496 624992 1249984 2499968 4999936 9999872