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89830081 = 11192914821
BaseRepresentation
bin1010101101010…
…11001011000001
320021000211201001
411112223023001
5140444030311
612525212001
72140354165
oct526531301
9207024631
1089830081
1146785740
1226101001
13157c27c3
14bd04ca5
157d464c1
hex55ab2c1

89830081 has 16 divisors (see below), whose sum is σ = 106718400. Its totient is φ = 74692800.

The previous prime is 89830079. The next prime is 89830087. The reversal of 89830081 is 18003898.

It is not a de Polignac number, because 89830081 - 21 = 89830079 is a prime.

It is a super-2 number, since 2×898300812 = 16138886904933122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 89830081.

It is not an unprimeable number, because it can be changed into a prime (89830087) 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 15 ways as a sum of consecutive naturals, for example, 1350 + ... + 13471.

It is an arithmetic number, because the mean of its divisors is an integer number (6669900).

Almost surely, 289830081 is an apocalyptic number.

It is an amenable number.

89830081 is a deficient number, since it is larger than the sum of its proper divisors (16888319).

89830081 is a wasteful number, since it uses less digits than its factorization.

89830081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14880.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 89830081 is about 9477.8732319018. The cubic root of 89830081 is about 447.8582689018.

The spelling of 89830081 in words is "eighty-nine million, eight hundred thirty thousand, eighty-one".

Divisors: 1 11 19 29 209 319 551 6061 14821 163031 281599 429809 3097589 4727899 8166371 89830081