23866420 has 24 divisors (see below), whose sum is σ = 51849000. Its totient is φ = 9217152.

The previous prime is 23866417. The next prime is 23866429. The reversal of 23866420 is 2466832.

It can be written as a sum of positive squares in 4 ways, for example, as 266256 + 23600164 = 516^2 + 4858^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23866429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19995 + ... + 21154.

It is an arithmetic number, because the mean of its divisors is an integer number (2160375).

Almost surely, 2^23866420 is an apocalyptic number.

23866420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23866420 is an abundant number, since it is smaller than the sum of its proper divisors (27982580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23866420 is a wasteful number, since it uses less digits than its factorization.

23866420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41187 (or 41185 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 23866420 is about 4885.3270105490. The cubic root of 23866420 is about 287.9137634038.

The spelling of 23866420 in words is "twenty-three million, eight hundred sixty-six thousand, four hundred twenty".