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23252143 = 1910311187
BaseRepresentation
bin101100010110…
…0110010101111
31121202022221111
41120230302233
521423032033
62150212451
7401432335
oct130546257
947668844
1023252143
1112141752
127954127
134a81785
143133b55
1520947cd
hex162ccaf

23252143 has 8 divisors (see below), whose sum is σ = 24520320. Its totient is φ = 21988440.

The previous prime is 23252111. The next prime is 23252153. The reversal of 23252143 is 34125232.

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 23252143 - 25 = 23252111 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23252153) 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, 18996 + ... + 20182.

It is an arithmetic number, because the mean of its divisors is an integer number (3065040).

Almost surely, 223252143 is an apocalyptic number.

23252143 is a deficient number, since it is larger than the sum of its proper divisors (1268177).

23252143 is a wasteful number, since it uses less digits than its factorization.

23252143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2237.

The product of its digits is 1440, while the sum is 22.

The square root of 23252143 is about 4822.0475941243. The cubic root of 23252143 is about 285.4221424444.

Adding to 23252143 its reverse (34125232), we get a palindrome (57377375).

The spelling of 23252143 in words is "twenty-three million, two hundred fifty-two thousand, one hundred forty-three".

Divisors: 1 19 1031 1187 19589 22553 1223797 23252143