20404095 has 16 divisors (see below), whose sum is σ = 32888160. Its totient is φ = 10801664.

The previous prime is 20404093. The next prime is 20404123. The reversal of 20404095 is 59040402.

It is a cyclic number.

It is not a de Polignac number, because 20404095 - 2¹ = 20404093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20404093) 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, 2910 + ... + 7019.

It is an arithmetic number, because the mean of its divisors is an integer number (2055510).

Almost surely, 2^20404095 is an apocalyptic number.

20404095 is a deficient number, since it is larger than the sum of its proper divisors (12484065).

20404095 is a wasteful number, since it uses less digits than its factorization.

20404095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10074.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 20404095 is about 4517.0892176268. The cubic root of 20404095 is about 273.2577233195.

Adding to 20404095 its reverse (59040402), we get a palindrome (79444497).

The spelling of 20404095 in words is "twenty million, four hundred four thousand, ninety-five".