2209156 has 12 divisors (see below), whose sum is σ = 3915520. Its totient is φ = 1090440.

The previous prime is 2209117. The next prime is 2209169. The reversal of 2209156 is 6519022.

It is a self number, because there is not a number n which added to its sum of digits gives 2209156.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3180 + ... + 3811.

2^2209156 is an apocalyptic number.

It is an amenable number.

2209156 is a deficient number, since it is larger than the sum of its proper divisors (1706364).

2209156 is a wasteful number, since it uses less digits than its factorization.

2209156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7074 (or 7072 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 2209156 is about 1486.3229797053. The cubic root of 2209156 is about 130.2393224645.

The spelling of 2209156 in words is "two million, two hundred nine thousand, one hundred fifty-six".