18002196 has 96 divisors (see below), whose sum is σ = 50892800. Its totient is φ = 5482080.

The previous prime is 18002189. The next prime is 18002233. The reversal of 18002196 is 69120081.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63471 + ... + 63753.

Almost surely, 2^18002196 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 18002196, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25446400).

18002196 is an abundant number, since it is smaller than the sum of its proper divisors (32890604).

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

18002196 is a wasteful number, since it uses less digits than its factorization.

18002196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346 (or 338 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 18002196 is about 4242.8994803082. The cubic root of 18002196 is about 262.0847966692.

The spelling of 18002196 in words is "eighteen million, two thousand, one hundred ninety-six".