4581020 has 24 divisors (see below), whose sum is σ = 9710064. Its totient is φ = 1815296.

The previous prime is 4581011. The next prime is 4581037. The reversal of 4581020 is 201854.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 4580983 and 4581001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1247 + ... + 3273.

It is an arithmetic number, because the mean of its divisors is an integer number (404586).

Almost surely, 2^4581020 is an apocalyptic number.

It is an amenable number.

4581020 is an abundant number, since it is smaller than the sum of its proper divisors (5129044).

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

4581020 is a wasteful number, since it uses less digits than its factorization.

4581020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2149 (or 2147 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 4581020 is about 2140.3317499864. The cubic root of 4581020 is about 166.0812975762.

Adding to 4581020 its reverse (201854), we get a palindrome (4782874).

The spelling of 4581020 in words is "four million, five hundred eighty-one thousand, twenty".