23878845 has 12 divisors (see below), whose sum is σ = 41390076. Its totient is φ = 12735360.

The previous prime is 23878843. The next prime is 23878859. The reversal of 23878845 is 54887832.

It can be written as a sum of positive squares in 2 ways, for example, as 12467961 + 11410884 = 3531^2 + 3378^2 .

It is not a de Polignac number, because 23878845 - 2¹ = 23878843 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 530641 = 23878845 / (2 + 3 + 8 + 7 + 8 + 8 + 4 + 5).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23878845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23878843) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 265276 + ... + 265365.

It is an arithmetic number, because the mean of its divisors is an integer number (3449173).

Almost surely, 2^23878845 is an apocalyptic number.

It is an amenable number.

23878845 is a deficient number, since it is larger than the sum of its proper divisors (17511231).

23878845 is a wasteful number, since it uses less digits than its factorization.

23878845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530652 (or 530649 counting only the distinct ones).

The product of its digits is 430080, while the sum is 45.

The square root of 23878845 is about 4886.5985102114. The cubic root of 23878845 is about 287.9637179410.

The spelling of 23878845 in words is "twenty-three million, eight hundred seventy-eight thousand, eight hundred forty-five".