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23461 = 29809
BaseRepresentation
bin101101110100101
31012011221
411232211
51222321
6300341
7125254
oct55645
935157
1023461
1116699
12116b1
13a8a9
14879b
156e41
hex5ba5

23461 has 4 divisors (see below), whose sum is σ = 24300. Its totient is φ = 22624.

The previous prime is 23459. The next prime is 23473. The reversal of 23461 is 16432.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16900 + 6561 = 130^2 + 81^2 .

It is a cyclic number.

It is not a de Polignac number, because 23461 - 21 = 23459 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in 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 in 3 ways as a sum of consecutive naturals, for example, 376 + ... + 433.

It is an arithmetic number, because the mean of its divisors is an integer number (6075).

223461 is an apocalyptic number.

23461 is the 69-th centered decagonal number.

It is an amenable number.

23461 is a deficient number, since it is larger than the sum of its proper divisors (839).

23461 is an equidigital number, since it uses as much as digits as its factorization.

23461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838.

The product of its digits is 144, while the sum is 16.

The square root of 23461 is about 153.1698403734. The cubic root of 23461 is about 28.6274175923.

Adding to 23461 its reverse (16432), we get a palindrome (39893).

It can be divided in two parts, 23 and 461, that added together give a palindrome (484).

The spelling of 23461 in words is "twenty-three thousand, four hundred sixty-one".

Divisors: 1 29 809 23461