4018020 has 48 divisors (see below), whose sum is σ = 11346048. Its totient is φ = 1062400.

The previous prime is 4017997. The next prime is 4018039. The reversal of 4018020 is 208104.

It is a super-2 number, since 2×4018020² = 32288969440800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

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 15 ways as a sum of consecutive naturals, for example, 9820 + ... + 10220.

It is an arithmetic number, because the mean of its divisors is an integer number (236376).

Almost surely, 2^4018020 is an apocalyptic number.

It is a pronic number, being equal to 2004×2005.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4018020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5673024).

4018020 is an abundant number, since it is smaller than the sum of its proper divisors (7328028).

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

4018020 is a wasteful number, since it uses less digits than its factorization.

4018020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580 (or 578 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 4018020 is about 2004.4999376403. The cubic root of 4018020 is about 158.9781228553.

The spelling of 4018020 in words is "four million, eighteen thousand, twenty".