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23144605 = 511420811
BaseRepresentation
bin101100001001…
…0100010011101
31121112212102121
41120102202131
521411111410
62144022541
7400503661
oct130224235
947485377
1023144605
1112078980
127901a51
134a44843
1431068a1
1520729da
hex161289d

23144605 has 8 divisors (see below), whose sum is σ = 30298464. Its totient is φ = 16832400.

The previous prime is 23144591. The next prime is 23144609. The reversal of 23144605 is 50644132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23144605 - 27 = 23144477 is a prime.

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 23144605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23144609) 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 7 ways as a sum of consecutive naturals, for example, 210351 + ... + 210460.

It is an arithmetic number, because the mean of its divisors is an integer number (3787308).

Almost surely, 223144605 is an apocalyptic number.

It is an amenable number.

23144605 is a deficient number, since it is larger than the sum of its proper divisors (7153859).

23144605 is a wasteful number, since it uses less digits than its factorization.

23144605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420827.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 23144605 is about 4810.8840143990. The cubic root of 23144605 is about 284.9814494954.

Adding to 23144605 its reverse (50644132), we get a palindrome (73788737).

The spelling of 23144605 in words is "twenty-three million, one hundred forty-four thousand, six hundred five".

Divisors: 1 5 11 55 420811 2104055 4628921 23144605