2011020 has 72 divisors (see below), whose sum is σ = 6211632. Its totient is φ = 485760.

The previous prime is 2011019. The next prime is 2011021. The reversal of 2011020 is 201102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2011019) and next prime (2011021).

It is a Harshad number since it is a multiple of its sum of digits (6).

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 (2011021) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 7122 + ... + 7398.

2^2011020 is an apocalyptic number.

2011020 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 2011020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3105816).

2011020 is an abundant number, since it is smaller than the sum of its proper divisors (4200612).

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

2011020 is a wasteful number, since it uses less digits than its factorization.

2011020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311 (or 298 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 2011020 is about 1418.1043685145. The cubic root of 2011020 is about 126.2230867705.

Adding to 2011020 its reverse (201102), we get a palindrome (2212122).

It can be divided in two parts, 201 and 1020, that added together give a palindrome (1221).

The spelling of 2011020 in words is "two million, eleven thousand, twenty".