23538881 has 2 divisors, whose sum is σ = 23538882. Its totient is φ = 23538880.

The previous prime is 23538857. The next prime is 23538947. The reversal of 23538881 is 18883532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22137025 + 1401856 = 4705^2 + 1184^2 .

It is a cyclic number.

It is not a de Polignac number, because 23538881 - 2¹⁴ = 23522497 is a prime.

It is a super-2 number, since 2×23538881² = 1108157837464322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23538811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11769440 + 11769441.

It is an arithmetic number, because the mean of its divisors is an integer number (11769441).

Almost surely, 2^23538881 is an apocalyptic number.

It is an amenable number.

23538881 is a deficient number, since it is larger than the sum of its proper divisors (1).

23538881 is an equidigital number, since it uses as much as digits as its factorization.

23538881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46080, while the sum is 38.

The square root of 23538881 is about 4851.6884689765. The cubic root of 23538881 is about 286.5905974173.

The spelling of 23538881 in words is "twenty-three million, five hundred thirty-eight thousand, eight hundred eighty-one".