23564340 has 144 divisors (see below), whose sum is σ = 76317696. Its totient is φ = 5875200.

The previous prime is 23564311. The next prime is 23564341. The reversal of 23564340 is 4346532.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23564341) 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 47 ways as a sum of consecutive naturals, for example, 228729 + ... + 228831.

It is an arithmetic number, because the mean of its divisors is an integer number (529984).

Almost surely, 2^23564340 is an apocalyptic number.

23564340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23564340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38158848).

23564340 is an abundant number, since it is smaller than the sum of its proper divisors (52753356).

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

23564340 is a wasteful number, since it uses less digits than its factorization.

23564340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 23564340 is about 4854.3114856795. The cubic root of 23564340 is about 286.6938829998.

The spelling of 23564340 in words is "twenty-three million, five hundred sixty-four thousand, three hundred forty".