23117556 has 96 divisors (see below), whose sum is σ = 68124672. Its totient is φ = 5927040.

The previous prime is 23117551. The next prime is 23117573. The reversal of 23117556 is 65571132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23117551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117250 + ... + 117446.

It is an arithmetic number, because the mean of its divisors is an integer number (709632).

Almost surely, 2^23117556 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 23117556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34062336).

23117556 is an abundant number, since it is smaller than the sum of its proper divisors (45007116).

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

23117556 is a wasteful number, since it uses less digits than its factorization.

23117556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349 (or 347 counting only the distinct ones).

The product of its digits is 6300, while the sum is 30.

The square root of 23117556 is about 4808.0719628558. The cubic root of 23117556 is about 284.8703873547.

Adding to 23117556 its reverse (65571132), we get a palindrome (88688688).

The spelling of 23117556 in words is "twenty-three million, one hundred seventeen thousand, five hundred fifty-six".