23481618 has 16 divisors (see below), whose sum is σ = 47607456. Its totient is φ = 7719840.

The previous prime is 23481611. The next prime is 23481637. The reversal of 23481618 is 81618432.

It is a super-3 number, since 3×23481618³ (a number of 23 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23481611) 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 7 ways as a sum of consecutive naturals, for example, 26368 + ... + 27243.

It is an arithmetic number, because the mean of its divisors is an integer number (2975466).

Almost surely, 2^23481618 is an apocalyptic number.

23481618 is an abundant number, since it is smaller than the sum of its proper divisors (24125838).

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

23481618 is a wasteful number, since it uses less digits than its factorization.

23481618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53689.

The product of its digits is 9216, while the sum is 33.

The square root of 23481618 is about 4845.7835279756. The cubic root of 23481618 is about 286.3580125422.

The spelling of 23481618 in words is "twenty-three million, four hundred eighty-one thousand, six hundred eighteen".