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23144193 = 326142157
BaseRepresentation
bin101100001001…
…0011100000001
31121112211212100
41120102130001
521411103233
62144021013
7400502532
oct130223401
947484770
1023144193
1112078636
127901769
134a445b7
143106689
152072813
hex1612701

23144193 has 12 divisors (see below), whose sum is σ = 33979348. Its totient is φ = 15176160.

The previous prime is 23144171. The next prime is 23144201. The reversal of 23144193 is 39144132.

It can be written as a sum of positive squares in 2 ways, for example, as 2241009 + 20903184 = 1497^2 + 4572^2 .

It is not a de Polignac number, because 23144193 - 25 = 23144161 is a prime.

It is a super-4 number, since 4×231441934 (a number of 31 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23144893) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20530 + ... + 21627.

Almost surely, 223144193 is an apocalyptic number.

It is an amenable number.

23144193 is a deficient number, since it is larger than the sum of its proper divisors (10835155).

23144193 is a wasteful number, since it uses less digits than its factorization.

23144193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42224 (or 42221 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 23144193 is about 4810.8411946353. The cubic root of 23144193 is about 284.9797584886.

The spelling of 23144193 in words is "twenty-three million, one hundred forty-four thousand, one hundred ninety-three".

Divisors: 1 3 9 61 183 549 42157 126471 379413 2571577 7714731 23144193