2011404020 has 12 divisors (see below), whose sum is σ = 4223948484. Its totient is φ = 804561600.

The previous prime is 2011404013. The next prime is 2011404023. The reversal of 2011404020 is 204041102.

It can be written as a sum of positive squares in 2 ways, for example, as 1389500176 + 621903844 = 37276^2 + 24938^2 .

It is a super-2 number, since 2×2011404020² = 8091492263344320800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2011403986 and 2011404004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011404023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50285081 + ... + 50285120.

It is an arithmetic number, because the mean of its divisors is an integer number (351995707).

Almost surely, 2^2011404020 is an apocalyptic number.

2011404020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011404020 is an abundant number, since it is smaller than the sum of its proper divisors (2212544464).

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

2011404020 is a wasteful number, since it uses less digits than its factorization.

2011404020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100570210 (or 100570208 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 2011404020 is about 44848.6791332811. The cubic root of 2011404020 is about 1262.3112068771.

Adding to 2011404020 its reverse (204041102), we get a palindrome (2215445122).

The spelling of 2011404020 in words is "two billion, eleven million, four hundred four thousand, twenty".