2020000 has 60 divisors (see below), whose sum is σ = 5018706. Its totient is φ = 800000.

The previous prime is 2019977. The next prime is 2020001. The reversal of 2020000 is 202.

It can be written as a sum of positive squares in 5 ways, for example, as 309136 + 1710864 = 556^2 + 1308^2 .

It is a Harshad number since it is a multiple of its sum of digits (4).

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

It is not an unprimeable number, because it can be changed into a prime (2020001) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 19950 + ... + 20050.

2^2020000 is an apocalyptic number.

2020000 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 2020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2509353).

2020000 is an abundant number, since it is smaller than the sum of its proper divisors (2998706).

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

2020000 is an equidigital number, since it uses as much as digits as its factorization.

2020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 4.

The square root of 2020000 is about 1421.2670403552. The cubic root of 2020000 is about 126.4106864863.

Adding to 2020000 its reverse (202), we get a palindrome (2020202).

Multiplying 2020000 by its reverse (202), we get a square (408040000 = 20200²).

2020000 divided by its reverse (202) gives a 4-th power (10000 = 10⁴).

The spelling of 2020000 in words is "two million, twenty thousand".