18408002 has 8 divisors (see below), whose sum is σ = 27766800. Its totient is φ = 9152404.

The previous prime is 18408001. The next prime is 18408023. The reversal of 18408002 is 20080481.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (18408001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25352 + ... + 26067.

It is an arithmetic number, because the mean of its divisors is an integer number (3470850).

Almost surely, 2^18408002 is an apocalyptic number.

18408002 is a deficient number, since it is larger than the sum of its proper divisors (9358798).

18408002 is a wasteful number, since it uses less digits than its factorization.

18408002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51600.

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 18408002 is about 4290.4547544520. The cubic root of 18408002 is about 264.0394894249.

Adding to 18408002 its reverse (20080481), we get a palindrome (38488483).

The spelling of 18408002 in words is "eighteen million, four hundred eight thousand, two".