4857820 has 48 divisors (see below), whose sum is σ = 11321856. Its totient is φ = 1736000.

The previous prime is 4857799. The next prime is 4857829. The reversal of 4857820 is 287584.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4857829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15465 + ... + 15775.

It is an arithmetic number, because the mean of its divisors is an integer number (235872).

Almost surely, 2^4857820 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 4857820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5660928).

4857820 is an abundant number, since it is smaller than the sum of its proper divisors (6464036).

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

4857820 is a wasteful number, since it uses less digits than its factorization.

4857820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402 (or 400 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 4857820 is about 2204.0462790060. The cubic root of 4857820 is about 169.3611547621.

The spelling of 4857820 in words is "four million, eight hundred fifty-seven thousand, eight hundred twenty".