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23083913 = 29795997
BaseRepresentation
bin101100000001…
…1101110001001
31121102210011202
41120003232021
521402141123
62142433545
7400132016
oct130035611
947383152
1023083913
1112037316
1278928b5
134a23028
1430cc70d
15205ea28
hex1603b89

23083913 has 4 divisors (see below), whose sum is σ = 23879940. Its totient is φ = 22287888.

The previous prime is 23083891. The next prime is 23083961. The reversal of 23083913 is 31938032.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19035769 + 4048144 = 4363^2 + 2012^2 .

It is a cyclic number.

It is not a de Polignac number, because 23083913 - 26 = 23083849 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 795997 = 23083913 / (2 + 3 + 0 + 8 + 3 + 9 + 1 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23083813) 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 3 ways as a sum of consecutive naturals, for example, 397970 + ... + 398027.

It is an arithmetic number, because the mean of its divisors is an integer number (5969985).

Almost surely, 223083913 is an apocalyptic number.

It is an amenable number.

23083913 is a deficient number, since it is larger than the sum of its proper divisors (796027).

23083913 is an equidigital number, since it uses as much as digits as its factorization.

23083913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796026.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 23083913 is about 4804.5720933294. The cubic root of 23083913 is about 284.7321295539.

The spelling of 23083913 in words is "twenty-three million, eighty-three thousand, nine hundred thirteen".

Divisors: 1 29 795997 23083913