18072002 has 16 divisors (see below), whose sum is σ = 30730560. Its totient is φ = 7901712.

The previous prime is 18072001. The next prime is 18072007. The reversal of 18072002 is 20027081.

It is not an unprimeable number, because it can be changed into a prime (18072001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17798 + ... + 18785.

It is an arithmetic number, because the mean of its divisors is an integer number (1920660).

Almost surely, 2^18072002 is an apocalyptic number.

18072002 is a deficient number, since it is larger than the sum of its proper divisors (12658558).

18072002 is a wasteful number, since it uses less digits than its factorization.

18072002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36617.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 18072002 is about 4251.1177353727. The cubic root of 18072002 is about 262.4231164105.

Adding to 18072002 its reverse (20027081), we get a palindrome (38099083).

The spelling of 18072002 in words is "eighteen million, seventy-two thousand, two".