20270005 has 16 divisors (see below), whose sum is σ = 27895680. Its totient is φ = 13851072.

The previous prime is 20269999. The next prime is 20270027. The reversal of 20270005 is 50007202.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20270005 - 2¹¹ = 20267957 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11311 + ... + 12979.

It is an arithmetic number, because the mean of its divisors is an integer number (1743480).

Almost surely, 2^20270005 is an apocalyptic number.

It is an amenable number.

20270005 is a deficient number, since it is larger than the sum of its proper divisors (7625675).

20270005 is a wasteful number, since it uses less digits than its factorization.

20270005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2028.

The product of its (nonzero) digits is 140, while the sum is 16.

The square root of 20270005 is about 4502.2222290775. Note that the first 5 decimals coincide. The cubic root of 20270005 is about 272.6578161679.

Adding to 20270005 its reverse (50007202), we get a palindrome (70277207).

It can be divided in two parts, 202 and 70005, that added together give a palindrome (70207).

The spelling of 20270005 in words is "twenty million, two hundred seventy thousand, five".