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23083949 = 72471101
BaseRepresentation
bin101100000001…
…1101110101101
31121102210020002
41120003232231
521402141244
62142434045
7400132100
oct130035655
947383202
1023083949
1112037349
127892925
134a23055
1430cc737
15205ea4e
hex1603bad

23083949 has 6 divisors (see below), whose sum is σ = 26852814. Its totient is φ = 19786200.

The previous prime is 23083891. The next prime is 23083961. The reversal of 23083949 is 94938032.

It can be written as a sum of positive squares in only one way, i.e., 21996100 + 1087849 = 4690^2 + 1043^2 .

It is not a de Polignac number, because 23083949 - 220 = 22035373 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23083969) 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 5 ways as a sum of consecutive naturals, for example, 235502 + ... + 235599.

It is an arithmetic number, because the mean of its divisors is an integer number (4475469).

Almost surely, 223083949 is an apocalyptic number.

It is an amenable number.

23083949 is a deficient number, since it is larger than the sum of its proper divisors (3768865).

23083949 is an equidigital number, since it uses as much as digits as its factorization.

23083949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471115 (or 471108 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 23083949 is about 4804.5758397594. The cubic root of 23083949 is about 284.7322775697.

The spelling of 23083949 in words is "twenty-three million, eighty-three thousand, nine hundred forty-nine".

Divisors: 1 7 49 471101 3297707 23083949