18811104 has 48 divisors (see below), whose sum is σ = 53181072. Its totient is φ = 5787648.

The previous prime is 18811103. The next prime is 18811123. The reversal of 18811104 is 40111881.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18811103) 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, 6289 + ... + 8784.

It is an arithmetic number, because the mean of its divisors is an integer number (1107939).

Almost surely, 2^18811104 is an apocalyptic number.

It is an amenable number.

18811104 is an abundant number, since it is smaller than the sum of its proper divisors (34369968).

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

18811104 is a wasteful number, since it uses less digits than its factorization.

18811104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15099 (or 15091 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 24.

The square root of 18811104 is about 4337.1769620342. The cubic root of 18811104 is about 265.9529190987.

Adding to 18811104 its reverse (40111881), we get a palindrome (58922985).

It can be divided in two parts, 18811 and 104, that added together give a triangular number (18915 = T₁₉₄).

The spelling of 18811104 in words is "eighteen million, eight hundred eleven thousand, one hundred four".