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23130344 = 232891293
BaseRepresentation
bin101100000111…
…1000011101000
31121112010212102
41120033003220
521410132334
62143432532
7400414256
oct130170350
947463772
1023130344
1112069196
1278b5748
134a3b1c3
1431015d6
15206d67e
hex160f0e8

23130344 has 8 divisors (see below), whose sum is σ = 43369410. Its totient is φ = 11565168.

The previous prime is 23130323. The next prime is 23130347. The reversal of 23130344 is 44303132.

It can be written as a sum of positive squares in only one way, i.e., 17322244 + 5808100 = 4162^2 + 2410^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (23130347) 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 as a sum of consecutive naturals, namely, 1445639 + ... + 1445654.

Almost surely, 223130344 is an apocalyptic number.

It is an amenable number.

23130344 is a deficient number, since it is larger than the sum of its proper divisors (20239066).

23130344 is a wasteful number, since it uses less digits than its factorization.

23130344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2891299 (or 2891295 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 23130344 is about 4809.4016259822. The cubic root of 23130344 is about 284.9229051756.

Adding to 23130344 its reverse (44303132), we get a palindrome (67433476).

The spelling of 23130344 in words is "twenty-three million, one hundred thirty thousand, three hundred forty-four".

Divisors: 1 2 4 8 2891293 5782586 11565172 23130344