9012198 has 32 divisors (see below), whose sum is σ = 19869696. Its totient is φ = 2707488.

The previous prime is 9012187. The next prime is 9012217. The reversal of 9012198 is 8912109.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2011 + ... + 4697.

It is an arithmetic number, because the mean of its divisors is an integer number (620928).

Almost surely, 2^9012198 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9012198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9934848).

9012198 is an abundant number, since it is smaller than the sum of its proper divisors (10857498).

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

9012198 is a wasteful number, since it uses less digits than its factorization.

9012198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2748.

The product of its (nonzero) digits is 1296, while the sum is 30.

The square root of 9012198 is about 3002.0323116182. The cubic root of 9012198 is about 208.1023134467.

The spelling of 9012198 in words is "nine million, twelve thousand, one hundred ninety-eight".