4493820 has 24 divisors (see below), whose sum is σ = 12582864. Its totient is φ = 1198336.

The previous prime is 4493813. The next prime is 4493821. The reversal of 4493820 is 283944.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4493821) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 37389 + ... + 37508.

It is an arithmetic number, because the mean of its divisors is an integer number (524286).

Almost surely, 2^4493820 is an apocalyptic number.

It is an amenable number.

4493820 is an abundant number, since it is smaller than the sum of its proper divisors (8089044).

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

4493820 is a wasteful number, since it uses less digits than its factorization.

4493820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74909 (or 74907 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 4493820 is about 2119.8632031336. The cubic root of 4493820 is about 165.0207503747.

The spelling of 4493820 in words is "four million, four hundred ninety-three thousand, eight hundred twenty".