18603104 has 48 divisors (see below), whose sum is σ = 39817008. Its totient is φ = 8504832.

The previous prime is 18603103. The next prime is 18603107. The reversal of 18603104 is 40130681.

It is a self number, because there is not a number n which added to its sum of digits gives 18603104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18603103) 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, 81839 + ... + 82065.

It is an arithmetic number, because the mean of its divisors is an integer number (829521).

Almost surely, 2^18603104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18603104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19908504).

18603104 is an abundant number, since it is smaller than the sum of its proper divisors (21213904).

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

18603104 is a wasteful number, since it uses less digits than its factorization.

18603104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447 (or 439 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 18603104 is about 4313.1315769404. The cubic root of 18603104 is about 264.9690434944.

Adding to 18603104 its reverse (40130681), we get a palindrome (58733785).

The spelling of 18603104 in words is "eighteen million, six hundred three thousand, one hundred four".