8481638 has 32 divisors (see below), whose sum is σ = 14826240. Its totient is φ = 3598560.

The previous prime is 8481637. The next prime is 8481661. The reversal of 8481638 is 8361848.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8481637) 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 15 ways as a sum of consecutive naturals, for example, 42956 + ... + 43152.

It is an arithmetic number, because the mean of its divisors is an integer number (463320).

Almost surely, 2^8481638 is an apocalyptic number.

8481638 is a deficient number, since it is larger than the sum of its proper divisors (6344602).

8481638 is a wasteful number, since it uses less digits than its factorization.

8481638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332.

The product of its digits is 36864, while the sum is 38.

The square root of 8481638 is about 2912.3251878868. The cubic root of 8481638 is about 203.9356935590.

It can be divided in two parts, 8481 and 638, that added together give a palindrome (9119).

The spelling of 8481638 in words is "eight million, four hundred eighty-one thousand, six hundred thirty-eight".