4030020 has 96 divisors (see below), whose sum is σ = 13305600. Its totient is φ = 1009152.

The previous prime is 4030007. The next prime is 4030051. The reversal of 4030020 is 200304.

It is a super-2 number, since 2×4030020² = 32482122400800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 4029984 and 4030011.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 8961 + ... + 9399.

It is an arithmetic number, because the mean of its divisors is an integer number (138600).

Almost surely, 2^4030020 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 4030020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6652800).

4030020 is an abundant number, since it is smaller than the sum of its proper divisors (9275580).

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

4030020 is a wasteful number, since it uses less digits than its factorization.

4030020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474 (or 466 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 9.

The square root of 4030020 is about 2007.4909713371. The cubic root of 4030020 is about 159.1362306992.

Adding to 4030020 its reverse (200304), we get a palindrome (4230324).

The spelling of 4030020 in words is "four million, thirty thousand, twenty".