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23143486 = 211571743
BaseRepresentation
bin101100001001…
…0010000111110
31121112210220011
41120102100332
521411042421
62144013434
7400500502
oct130222076
947483804
1023143486
1112078053
12790127a
134a44192
143106302
1520724e1
hex161243e

23143486 has 4 divisors (see below), whose sum is σ = 34715232. Its totient is φ = 11571742.

The previous prime is 23143459. The next prime is 23143487. The reversal of 23143486 is 68434132.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23143487) 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 as a sum of consecutive naturals, namely, 5785870 + ... + 5785873.

It is an arithmetic number, because the mean of its divisors is an integer number (8678808).

Almost surely, 223143486 is an apocalyptic number.

23143486 is a deficient number, since it is larger than the sum of its proper divisors (11571746).

23143486 is a wasteful number, since it uses less digits than its factorization.

23143486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11571745.

The product of its digits is 13824, while the sum is 31.

The square root of 23143486 is about 4810.7677142011. The cubic root of 23143486 is about 284.9768566413.

The spelling of 23143486 in words is "twenty-three million, one hundred forty-three thousand, four hundred eighty-six".

Divisors: 1 2 11571743 23143486