23778841 has 4 divisors (see below), whose sum is σ = 23830884. Its totient is φ = 23726800.

The previous prime is 23778809. The next prime is 23778857. The reversal of 23778841 is 14887732.

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 2572816 + 21206025 = 1604^2 + 4605^2 .

It is a cyclic number.

It is not a de Polignac number, because 23778841 - 2⁵ = 23778809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23778794 and 23778803.

It is not an unprimeable number, because it can be changed into a prime (23778341) 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, 25330 + ... + 26251.

It is an arithmetic number, because the mean of its divisors is an integer number (5957721).

Almost surely, 2^23778841 is an apocalyptic number.

It is an amenable number.

23778841 is a deficient number, since it is larger than the sum of its proper divisors (52043).

23778841 is an equidigital number, since it uses as much as digits as its factorization.

23778841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52042.

The product of its digits is 75264, while the sum is 40.

The square root of 23778841 is about 4876.3552987862. The cubic root of 23778841 is about 287.5611605232.

The spelling of 23778841 in words is "twenty-three million, seven hundred seventy-eight thousand, eight hundred forty-one".