23404253 has 4 divisors (see below), whose sum is σ = 23470908. Its totient is φ = 23337600.

The previous prime is 23404237. The next prime is 23404273. The reversal of 23404253 is 35240432.

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 5654884 + 17749369 = 2378^2 + 4213^2 .

It is a cyclic number.

It is not a de Polignac number, because 23404253 - 2⁴ = 23404237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23404273) 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, 32798 + ... + 33503.

It is an arithmetic number, because the mean of its divisors is an integer number (5867727).

Almost surely, 2^23404253 is an apocalyptic number.

It is an amenable number.

23404253 is a deficient number, since it is larger than the sum of its proper divisors (66655).

23404253 is an equidigital number, since it uses as much as digits as its factorization.

23404253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66654.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 23404253 is about 4837.7942287782. The cubic root of 23404253 is about 286.0431781518.

Adding to 23404253 its reverse (35240432), we get a palindrome (58644685).

The spelling of 23404253 in words is "twenty-three million, four hundred four thousand, two hundred fifty-three".