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23144045 = 57276367
BaseRepresentation
bin101100001001…
…0011001101101
31121112211122212
41120102121231
521411102140
62144020205
7400502231
oct130223155
947484585
1023144045
1112078511
127901665
134a44502
1431065c1
152072765
hex161266d

23144045 has 8 divisors (see below), whose sum is σ = 27815424. Its totient is φ = 18486864.

The previous prime is 23144041. The next prime is 23144063. The reversal of 23144045 is 54044132.

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

It is a cyclic number.

It is not a de Polignac number, because 23144045 - 22 = 23144041 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 23144045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23144041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 452 + ... + 6818.

It is an arithmetic number, because the mean of its divisors is an integer number (3476928).

Almost surely, 223144045 is an apocalyptic number.

It is an amenable number.

23144045 is a deficient number, since it is larger than the sum of its proper divisors (4671379).

23144045 is an equidigital number, since it uses as much as digits as its factorization.

23144045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7099.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 23144045 is about 4810.8258126854. The cubic root of 23144045 is about 284.9791510346.

Adding to 23144045 its reverse (54044132), we get a palindrome (77188177).

The spelling of 23144045 in words is "twenty-three million, one hundred forty-four thousand, forty-five".

Divisors: 1 5 727 3635 6367 31835 4628809 23144045