18007912 has 32 divisors (see below), whose sum is σ = 36540000. Its totient is φ = 8270784.

The previous prime is 18007907. The next prime is 18007939. The reversal of 18007912 is 21970081.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35839 + ... + 36337.

It is an arithmetic number, because the mean of its divisors is an integer number (1141875).

Almost surely, 2^18007912 is an apocalyptic number.

It is an amenable number.

18007912 is an abundant number, since it is smaller than the sum of its proper divisors (18532088).

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

18007912 is a wasteful number, since it uses less digits than its factorization.

18007912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865 (or 861 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 18007912 is about 4243.5730228193. The cubic root of 18007912 is about 262.1125325108.

Adding to 18007912 its reverse (21970081), we get a palindrome (39977993).

The spelling of 18007912 in words is "eighteen million, seven thousand, nine hundred twelve".