2011436406 has 72 divisors (see below), whose sum is σ = 5256757584. Its totient is φ = 544436640.

The previous prime is 2011436363. The next prime is 2011436407. The reversal of 2011436406 is 6046341102.

2011436406 is a `hidden beast` number, since 2 + 0 + 1 + 14 + 3 + 640 + 6 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2011436406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011436407) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 23376 + ... + 67596.

It is an arithmetic number, because the mean of its divisors is an integer number (73010522).

Almost surely, 2^2011436406 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2011436406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2628378792).

2011436406 is an abundant number, since it is smaller than the sum of its proper divisors (3245321178).

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

2011436406 is a wasteful number, since it uses less digits than its factorization.

2011436406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44274 (or 44252 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 2011436406 is about 44849.0401903987. The cubic root of 2011436406 is about 1262.3179817453.

Adding to 2011436406 its reverse (6046341102), we get a palindrome (8057777508).

The spelling of 2011436406 in words is "two billion, eleven million, four hundred thirty-six thousand, four hundred six".