20060406 has 32 divisors (see below), whose sum is σ = 44776800. Its totient is φ = 6657120.

The previous prime is 20060387. The next prime is 20060407. The reversal of 20060406 is 60406002.

20060406 is a `hidden beast` number, since 200 + 60 + 406 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20060407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13836 + ... + 15216.

It is an arithmetic number, because the mean of its divisors is an integer number (1399275).

Almost surely, 2^20060406 is an apocalyptic number.

20060406 is an abundant number, since it is smaller than the sum of its proper divisors (24716394).

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

20060406 is a wasteful number, since it uses less digits than its factorization.

20060406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661 (or 1655 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 20060406 is about 4478.8844593269. The cubic root of 20060406 is about 271.7147655101.

Adding to 20060406 its reverse (60406002), we get a palindrome (80466408).

It can be divided in two parts, 200 and 60406, that added together give a palindrome (60606).

The spelling of 20060406 in words is "twenty million, sixty thousand, four hundred six".