23636420 has 24 divisors (see below), whose sum is σ = 49729344. Its totient is φ = 9436896.

The previous prime is 23636411. The next prime is 23636423. The reversal of 23636420 is 2463632.

It is a self number, because there is not a number n which added to its sum of digits gives 23636420.

It is not an unprimeable number, because it can be changed into a prime (23636423) 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, 17489 + ... + 18791.

It is an arithmetic number, because the mean of its divisors is an integer number (2072056).

Almost surely, 2^23636420 is an apocalyptic number.

23636420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23636420 is an abundant number, since it is smaller than the sum of its proper divisors (26092924).

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

23636420 is a wasteful number, since it uses less digits than its factorization.

23636420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2219 (or 2217 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 23636420 is about 4861.7301447119. The cubic root of 23636420 is about 286.9859041991.

The spelling of 23636420 in words is "twenty-three million, six hundred thirty-six thousand, four hundred twenty".