2205406 has 16 divisors (see below), whose sum is σ = 3980160. Its totient is φ = 895320.

The previous prime is 2205389. The next prime is 2205409. The reversal of 2205406 is 6045022.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2205409) 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, 3880 + ... + 4411.

It is an arithmetic number, because the mean of its divisors is an integer number (248760).

2^2205406 is an apocalyptic number.

2205406 is a deficient number, since it is larger than the sum of its proper divisors (1774754).

2205406 is a wasteful number, since it uses less digits than its factorization.

2205406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8319.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 2205406 is about 1485.0609415105. The cubic root of 2205406 is about 130.1655878091.

The spelling of 2205406 in words is "two million, two hundred five thousand, four hundred six".