18308682 has 24 divisors (see below), whose sum is σ = 45336096. Its totient is φ = 5231016.

The previous prime is 18308671. The next prime is 18308683. The reversal of 18308682 is 28680381.

It is not an unprimeable number, because it can be changed into a prime (18308683) 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 11 ways as a sum of consecutive naturals, for example, 72528 + ... + 72779.

It is an arithmetic number, because the mean of its divisors is an integer number (1889004).

Almost surely, 2^18308682 is an apocalyptic number.

18308682 is an abundant number, since it is smaller than the sum of its proper divisors (27027414).

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

18308682 is a wasteful number, since it uses less digits than its factorization.

18308682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145322 (or 145319 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 18308682 is about 4278.8645690183. The cubic root of 18308682 is about 263.5637595696.

The spelling of 18308682 in words is "eighteen million, three hundred eight thousand, six hundred eighty-two".