2205156 has 12 divisors (see below), whose sum is σ = 5145392. Its totient is φ = 735048.

The previous prime is 2205149. The next prime is 2205157. The reversal of 2205156 is 6515022.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (2205157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91870 + ... + 91893.

2^2205156 is an apocalyptic number.

It is an amenable number.

2205156 is an abundant number, since it is smaller than the sum of its proper divisors (2940236).

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

2205156 is a wasteful number, since it uses less digits than its factorization.

2205156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183770 (or 183768 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 2205156 is about 1484.9767674950. The cubic root of 2205156 is about 130.1606691945.

The spelling of 2205156 in words is "two million, two hundred five thousand, one hundred fifty-six".