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BaseRepresentation
bin101101110001110
31012011002
411232032
51222223
6300302
7125222
oct55616
935132
1023438
1116678
1211692
13a88c
148782
156e28
hex5b8e

23438 has 4 divisors (see below), whose sum is σ = 35160. Its totient is φ = 11718.

The previous prime is 23431. The next prime is 23447. The reversal of 23438 is 83432.

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

It is a d-powerful number, because it can be written as 25 + 37 + 45 + 39 + 83 .

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

It is a Curzon number.

It is a plaindrome in base 5 and base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5858 + ... + 5861.

It is an arithmetic number, because the mean of its divisors is an integer number (8790).

223438 is an apocalyptic number.

23438 is a deficient number, since it is larger than the sum of its proper divisors (11722).

23438 is a wasteful number, since it uses less digits than its factorization.

23438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11721.

The product of its digits is 576, while the sum is 20.

The square root of 23438 is about 153.0947419084. The cubic root of 23438 is about 28.6180595671.

It can be divided in two parts, 234 and 38, that added together give a palindrome (272).

The spelling of 23438 in words is "twenty-three thousand, four hundred thirty-eight".

Divisors: 1 2 11719 23438