2198406 has 32 divisors (see below), whose sum is σ = 5322240. Its totient is φ = 590976.

The previous prime is 2198401. The next prime is 2198407. The reversal of 2198406 is 6048912.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2198401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 826 + ... + 2253.

It is an arithmetic number, because the mean of its divisors is an integer number (166320).

2^2198406 is an apocalyptic number.

2198406 is an abundant number, since it is smaller than the sum of its proper divisors (3123834).

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

2198406 is a wasteful number, since it uses less digits than its factorization.

2198406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3108.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 2198406 is about 1482.7022627622. The cubic root of 2198406 is about 130.0277258418.

The spelling of 2198406 in words is "two million, one hundred ninety-eight thousand, four hundred six".