4481820 has 72 divisors (see below), whose sum is σ = 15541344. Its totient is φ = 1024128.

The previous prime is 4481819. The next prime is 4481837. The reversal of 4481820 is 281844.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 519 + ... + 3038.

It is an arithmetic number, because the mean of its divisors is an integer number (215852).

Almost surely, 2^4481820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4481820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7770672).

4481820 is an abundant number, since it is smaller than the sum of its proper divisors (11059524).

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

4481820 is a wasteful number, since it uses less digits than its factorization.

4481820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3579 (or 3574 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 4481820 is about 2117.0309397834. The cubic root of 4481820 is about 164.8737325987.

The spelling of 4481820 in words is "four million, four hundred eighty-one thousand, eight hundred twenty".