23381056 has 56 divisors (see below), whose sum is σ = 48472344. Its totient is φ = 11182080.

The previous prime is 23381023. The next prime is 23381063. The reversal of 23381056 is 65018332.

It can be written as a sum of positive squares in 4 ways, for example, as 341056 + 23040000 = 584^2 + 4800^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206856 + ... + 206968.

Almost surely, 2^23381056 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 23381056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24236172).

23381056 is an abundant number, since it is smaller than the sum of its proper divisors (25091288).

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

23381056 is a wasteful number, since it uses less digits than its factorization.

23381056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239 (or 229 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 23381056 is about 4835.3961575035. The cubic root of 23381056 is about 285.9486435244.

Adding to 23381056 its reverse (65018332), we get a palindrome (88399388).

The spelling of 23381056 in words is "twenty-three million, three hundred eighty-one thousand, fifty-six".