4921228 has 48 divisors (see below), whose sum is σ = 10372320. Its totient is φ = 2018304.

The previous prime is 4921201. The next prime is 4921243. The reversal of 4921228 is 8221294.

It is a junction number, because it is equal to n+sod(n) for n = 4921196 and 4921205.

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 15 ways as a sum of consecutive naturals, for example, 16650 + ... + 16942.

It is an arithmetic number, because the mean of its divisors is an integer number (216090).

Almost surely, 2^4921228 is an apocalyptic number.

It is an amenable number.

4921228 is an abundant number, since it is smaller than the sum of its proper divisors (5451092).

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

4921228 is a wasteful number, since it uses less digits than its factorization.

4921228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346 (or 344 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 4921228 is about 2218.3840965892. The cubic root of 4921228 is about 170.0948490313.

The spelling of 4921228 in words is "four million, nine hundred twenty-one thousand, two hundred twenty-eight".