2909228 has 18 divisors (see below), whose sum is σ = 5922756. Its totient is φ = 1246728.

The previous prime is 2909219. The next prime is 2909239. The reversal of 2909228 is 8229092.

2909228 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2909194 and 2909203.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7226 + ... + 7617.

It is an arithmetic number, because the mean of its divisors is an integer number (329042).

2^2909228 is an apocalyptic number.

2909228 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2909228 is an abundant number, since it is smaller than the sum of its proper divisors (3013528).

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

2909228 is a wasteful number, since it uses less digits than its factorization.

2909228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14861 (or 14852 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 2909228 is about 1705.6459187065. The cubic root of 2909228 is about 142.7554134799.

The spelling of 2909228 in words is "two million, nine hundred nine thousand, two hundred twenty-eight".