18232002 has 24 divisors (see below), whose sum is σ = 39587184. Its totient is φ = 6064344.

The previous prime is 18231991. The next prime is 18232021. The reversal of 18232002 is 20023281.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11553 + ... + 13035.

It is an arithmetic number, because the mean of its divisors is an integer number (1649466).

Almost surely, 2^18232002 is an apocalyptic number.

18232002 is an abundant number, since it is smaller than the sum of its proper divisors (21355182).

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

18232002 is a wasteful number, since it uses less digits than its factorization.

18232002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2174 (or 2171 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 18232002 is about 4269.8948464804. The cubic root of 18232002 is about 263.1952941359.

Adding to 18232002 its reverse (20023281), we get a palindrome (38255283).

The spelling of 18232002 in words is "eighteen million, two hundred thirty-two thousand, two".