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23144233 = 723294957
BaseRepresentation
bin101100001001…
…0011100101001
31121112211220211
41120102130221
521411103413
62144021121
7400502620
oct130223451
947484824
1023144233
1112078672
1279017a1
134a44618
1431066b7
15207283d
hex1612729

23144233 has 16 divisors (see below), whose sum is σ = 28558080. Its totient is φ = 18317376.

The previous prime is 23144227. The next prime is 23144237. The reversal of 23144233 is 33244132.

It is a happy number.

It is not a de Polignac number, because 23144233 - 25 = 23144201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23144237) 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 15 ways as a sum of consecutive naturals, for example, 2191 + ... + 7147.

It is an arithmetic number, because the mean of its divisors is an integer number (1784880).

Almost surely, 223144233 is an apocalyptic number.

23144233 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

23144233 is a deficient number, since it is larger than the sum of its proper divisors (5413847).

23144233 is a wasteful number, since it uses less digits than its factorization.

23144233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5016.

The product of its digits is 1728, while the sum is 22.

The square root of 23144233 is about 4810.8453519106. The cubic root of 23144233 is about 284.9799226649.

Adding to 23144233 its reverse (33244132), we get a palindrome (56388365).

The spelling of 23144233 in words is "twenty-three million, one hundred forty-four thousand, two hundred thirty-three".

Divisors: 1 7 23 29 161 203 667 4669 4957 34699 114011 143753 798077 1006271 3306319 23144233