23481645 has 32 divisors (see below), whose sum is σ = 41675904. Its totient is φ = 11193600.

The previous prime is 23481637. The next prime is 23481649. The reversal of 23481645 is 54618432.

It is not a de Polignac number, because 23481645 - 2³ = 23481637 is a prime.

It is a super-3 number, since 3×23481645³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23481649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8899 + ... + 11231.

It is an arithmetic number, because the mean of its divisors is an integer number (1302372).

Almost surely, 2^23481645 is an apocalyptic number.

It is an amenable number.

23481645 is a deficient number, since it is larger than the sum of its proper divisors (18194259).

23481645 is a wasteful number, since it uses less digits than its factorization.

23481645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2413.

The product of its digits is 23040, while the sum is 33.

The square root of 23481645 is about 4845.7863139020. The cubic root of 23481645 is about 286.3581222970.

It can be divided in two parts, 2348 and 1645, that added together give a palindrome (3993).

The spelling of 23481645 in words is "twenty-three million, four hundred eighty-one thousand, six hundred forty-five".