2228919 has 16 divisors (see below), whose sum is σ = 3705600. Its totient is φ = 1157760.

The previous prime is 2228893. The next prime is 2228923. The reversal of 2228919 is 9198222.

It is a happy number.

It is not a de Polignac number, because 2228919 - 2⁸ = 2228663 is a prime.

It is a super-2 number, since 2×2228919² = 9936159817122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

2228919 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2228919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2228939) 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, 4594 + ... + 5055.

It is an arithmetic number, because the mean of its divisors is an integer number (231600).

2^2228919 is an apocalyptic number.

2228919 is a deficient number, since it is larger than the sum of its proper divisors (1476681).

2228919 is a wasteful number, since it uses less digits than its factorization.

2228919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9670.

The product of its digits is 5184, while the sum is 33.

The square root of 2228919 is about 1492.9564628615. The cubic root of 2228919 is about 130.6265415750.

The spelling of 2228919 in words is "two million, two hundred twenty-eight thousand, nine hundred nineteen".