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23144269 = 43153699
BaseRepresentation
bin101100001001…
…0011101001101
31121112211222011
41120102131031
521411104034
62144021221
7400503001
oct130223515
947484864
1023144269
11120786a5
127901811
134a44645
143106701
152072864
hex161274d

23144269 has 4 divisors (see below), whose sum is σ = 23198400. Its totient is φ = 23090140.

The previous prime is 23144243. The next prime is 23144273. The reversal of 23144269 is 96244132.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23144269 - 25 = 23144237 is a prime.

It is a super-2 number, since 2×231442692 = 1071314375088722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23144269.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23148269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26419 + ... + 27280.

It is an arithmetic number, because the mean of its divisors is an integer number (5799600).

Almost surely, 223144269 is an apocalyptic number.

It is an amenable number.

23144269 is a deficient number, since it is larger than the sum of its proper divisors (54131).

23144269 is an equidigital number, since it uses as much as digits as its factorization.

23144269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54130.

The product of its digits is 10368, while the sum is 31.

The square root of 23144269 is about 4810.8490934553. The cubic root of 23144269 is about 284.9800704234.

The spelling of 23144269 in words is "twenty-three million, one hundred forty-four thousand, two hundred sixty-nine".

Divisors: 1 431 53699 23144269