4811220 has 36 divisors (see below), whose sum is σ = 14594580. Its totient is φ = 1282944.

The previous prime is 4811197. The next prime is 4811239. The reversal of 4811220 is 221184.

It can be written as a sum of positive squares in 2 ways, for example, as 2396304 + 2414916 = 1548^2 + 1554^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 4811193 and 4811202.

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 11 ways as a sum of consecutive naturals, for example, 13185 + ... + 13544.

It is an arithmetic number, because the mean of its divisors is an integer number (405405).

Almost surely, 2^4811220 is an apocalyptic number.

It is an amenable number.

4811220 is an abundant number, since it is smaller than the sum of its proper divisors (9783360).

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

4811220 is a wasteful number, since it uses less digits than its factorization.

4811220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26744 (or 26739 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 4811220 is about 2193.4493383710. The cubic root of 4811220 is about 168.8178657071.

The spelling of 4811220 in words is "four million, eight hundred eleven thousand, two hundred twenty".