2228291 has 8 divisors (see below), whose sum is σ = 2415504. Its totient is φ = 2043360.

The previous prime is 2228243. The next prime is 2228299. The reversal of 2228291 is 1928222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2228291 is a prime.

It is a super-3 number, since 3×2228291³ = 33192271428193338513, which contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2228291.

It is not an unprimeable number, because it can be changed into a prime (2228299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1880 + ... + 2826.

It is an arithmetic number, because the mean of its divisors is an integer number (301938).

2^2228291 is an apocalyptic number.

2228291 is a deficient number, since it is larger than the sum of its proper divisors (187213).

2228291 is a wasteful number, since it uses less digits than its factorization.

2228291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141.

The product of its digits is 1152, while the sum is 26.

The square root of 2228291 is about 1492.7461271094. The cubic root of 2228291 is about 130.6142723728.

The spelling of 2228291 in words is "two million, two hundred twenty-eight thousand, two hundred ninety-one".