20406027 has 8 divisors (see below), whose sum is σ = 27243216. Its totient is φ = 13586432.

The previous prime is 20406017. The next prime is 20406107. The reversal of 20406027 is 72060402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20406027 - 2⁴ = 20406011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20405994 and 20406012.

It is not an unprimeable number, because it can be changed into a prime (20406017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1398 + ... + 6539.

It is an arithmetic number, because the mean of its divisors is an integer number (3405402).

Almost surely, 2^20406027 is an apocalyptic number.

20406027 is a deficient number, since it is larger than the sum of its proper divisors (6837189).

20406027 is an equidigital number, since it uses as much as digits as its factorization.

20406027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8797.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 20406027 is about 4517.3030670966. The cubic root of 20406027 is about 273.2663476873.

Adding to 20406027 its reverse (72060402), we get a palindrome (92466429).

The spelling of 20406027 in words is "twenty million, four hundred six thousand, twenty-seven".