18790008 has 32 divisors (see below), whose sum is σ = 47640960. Its totient is φ = 6174560.

The previous prime is 18790003. The next prime is 18790019. The reversal of 18790008 is 80009781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18790001) 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, 3810 + ... + 7217.

It is an arithmetic number, because the mean of its divisors is an integer number (1488780).

Almost surely, 2^18790008 is an apocalyptic number.

It is an amenable number.

18790008 is an abundant number, since it is smaller than the sum of its proper divisors (28850952).

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

18790008 is a wasteful number, since it uses less digits than its factorization.

18790008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11107 (or 11103 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 33.

The square root of 18790008 is about 4334.7442831152. The cubic root of 18790008 is about 265.8534629223.

Adding to 18790008 its reverse (80009781), we get a palindrome (98799789).

The spelling of 18790008 in words is "eighteen million, seven hundred ninety thousand, eight".