18003696 has 40 divisors (see below), whose sum is σ = 47080320. Its totient is φ = 5927616.

The previous prime is 18003691. The next prime is 18003701. The reversal of 18003696 is 69630081.

It is an interprime number because it is at equal distance from previous prime (18003691) and next prime (18003701).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18003691) 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, 1725 + ... + 6243.

It is an arithmetic number, because the mean of its divisors is an integer number (1177008).

Almost surely, 2^18003696 is an apocalyptic number.

18003696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18003696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23540160).

18003696 is an abundant number, since it is smaller than the sum of its proper divisors (29076624).

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

18003696 is a wasteful number, since it uses less digits than its factorization.

18003696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4613 (or 4607 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 18003696 is about 4243.0762425391. The cubic root of 18003696 is about 262.0920757122.

The spelling of 18003696 in words is "eighteen million, three thousand, six hundred ninety-six".