2020440 has 64 divisors (see below), whose sum is σ = 6156000. Its totient is φ = 530432.

The previous prime is 2020429. The next prime is 2020457. The reversal of 2020440 is 440202.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 13486 + ... + 13634.

2^2020440 is an apocalyptic number.

2020440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2020440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3078000).

2020440 is an abundant number, since it is smaller than the sum of its proper divisors (4135560).

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

2020440 is a wasteful number, since it uses less digits than its factorization.

2020440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276 (or 272 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 2020440 is about 1421.4218233867. The cubic root of 2020440 is about 126.4198641537.

Adding to 2020440 its reverse (440202), we get a palindrome (2460642).

The spelling of 2020440 in words is "two million, twenty thousand, four hundred forty".