18711104 has 28 divisors (see below), whose sum is σ = 38331648. Its totient is φ = 9052800.

The previous prime is 18711089. The next prime is 18711107. The reversal of 18711104 is 40111781.

It is a happy number.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 18711104.

It is not an unprimeable number, because it can be changed into a prime (18711107) 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, 2732 + ... + 6699.

Almost surely, 2^18711104 is an apocalyptic number.

It is an amenable number.

18711104 is an abundant number, since it is smaller than the sum of its proper divisors (19620544).

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

18711104 is an equidigital number, since it uses as much as digits as its factorization.

18711104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9474 (or 9464 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 23.

The square root of 18711104 is about 4325.6333640289. The cubic root of 18711104 is about 265.4808121537.

Adding to 18711104 its reverse (40111781), we get a palindrome (58822885).

The spelling of 18711104 in words is "eighteen million, seven hundred eleven thousand, one hundred four".