23564436 has 96 divisors (see below), whose sum is σ = 65802240. Its totient is φ = 6424704.

The previous prime is 23564419. The next prime is 23564461. The reversal of 23564436 is 63446532.

It is a junction number, because it is equal to n+sod(n) for n = 23564397 and 23564406.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 298245 + ... + 298323.

It is an arithmetic number, because the mean of its divisors is an integer number (685440).

Almost surely, 2^23564436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23564436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32901120).

23564436 is an abundant number, since it is smaller than the sum of its proper divisors (42237804).

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

23564436 is a wasteful number, since it uses less digits than its factorization.

23564436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213 (or 211 counting only the distinct ones).

The product of its digits is 51840, while the sum is 33.

The square root of 23564436 is about 4854.3213737865. The cubic root of 23564436 is about 286.6942723250.

The spelling of 23564436 in words is "twenty-three million, five hundred sixty-four thousand, four hundred thirty-six".