4821220 has 12 divisors (see below), whose sum is σ = 10124604. Its totient is φ = 1928480.

The previous prime is 4821209. The next prime is 4821239. The reversal of 4821220 is 221284.

It can be written as a sum of positive squares in 2 ways, for example, as 3602404 + 1218816 = 1898^2 + 1104^2 .

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120511 + ... + 120550.

It is an arithmetic number, because the mean of its divisors is an integer number (843717).

Almost surely, 2^4821220 is an apocalyptic number.

It is an amenable number.

4821220 is an abundant number, since it is smaller than the sum of its proper divisors (5303384).

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

4821220 is a wasteful number, since it uses less digits than its factorization.

4821220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241070 (or 241068 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 4821220 is about 2195.7276698170. The cubic root of 4821220 is about 168.9347459990.

It can be divided in two parts, 4821 and 220, that added together give a square (5041 = 71²).

The spelling of 4821220 in words is "four million, eight hundred twenty-one thousand, two hundred twenty".