18313008 has 40 divisors (see below), whose sum is σ = 54067968. Its totient is φ = 5232192.

The previous prime is 18312997. The next prime is 18313027. The reversal of 18313008 is 80031381.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 26916 + ... + 27587.

Almost surely, 2^18313008 is an apocalyptic number.

It is an amenable number.

18313008 is an abundant number, since it is smaller than the sum of its proper divisors (35754960).

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

18313008 is a wasteful number, since it uses less digits than its factorization.

18313008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54521 (or 54515 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 18313008 is about 4279.3700470981. The cubic root of 18313008 is about 263.5845163347.

Adding to 18313008 its reverse (80031381), we get a palindrome (98344389).

The spelling of 18313008 in words is "eighteen million, three hundred thirteen thousand, eight".