23778241 has 4 divisors (see below), whose sum is σ = 23996500. Its totient is φ = 23559984.

The previous prime is 23778221. The next prime is 23778259. The reversal of 23778241 is 14287732.

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 9790641 + 13987600 = 3129^2 + 3740^2 .

It is a cyclic number.

It is not a de Polignac number, because 23778241 - 2⁹ = 23777729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23778197 and 23778206.

It is not an unprimeable number, because it can be changed into a prime (23778211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108966 + ... + 109183.

It is an arithmetic number, because the mean of its divisors is an integer number (5999125).

Almost surely, 2^23778241 is an apocalyptic number.

It is an amenable number.

23778241 is a deficient number, since it is larger than the sum of its proper divisors (218259).

23778241 is a wasteful number, since it uses less digits than its factorization.

23778241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218258.

The product of its digits is 18816, while the sum is 34.

The square root of 23778241 is about 4876.2937770401. The cubic root of 23778241 is about 287.5587418723.

The spelling of 23778241 in words is "twenty-three million, seven hundred seventy-eight thousand, two hundred forty-one".