4991228 has 12 divisors (see below), whose sum is σ = 9528792. Its totient is φ = 2268720.

The previous prime is 4991201. The next prime is 4991237. The reversal of 4991228 is 8221994.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56675 + ... + 56762.

It is an arithmetic number, because the mean of its divisors is an integer number (794066).

Almost surely, 2^4991228 is an apocalyptic number.

It is an amenable number.

4991228 is a deficient number, since it is larger than the sum of its proper divisors (4537564).

4991228 is a wasteful number, since it uses less digits than its factorization.

4991228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113452 (or 113450 counting only the distinct ones).

The product of its digits is 10368, while the sum is 35.

The square root of 4991228 is about 2234.1056376098. The cubic root of 4991228 is about 170.8975367376.

The spelling of 4991228 in words is "four million, nine hundred ninety-one thousand, two hundred twenty-eight".