20104495 has 8 divisors (see below), whose sum is σ = 24162480. Its totient is φ = 16058880.

The previous prime is 20104493. The next prime is 20104499. The reversal of 20104495 is 59440102.

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

It is not a de Polignac number, because 20104495 - 2¹ = 20104493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20104493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 975 + ... + 6415.

It is an arithmetic number, because the mean of its divisors is an integer number (3020310).

Almost surely, 2^20104495 is an apocalyptic number.

20104495 is a deficient number, since it is larger than the sum of its proper divisors (4057985).

20104495 is an equidigital number, since it uses as much as digits as its factorization.

20104495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6185.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 20104495 is about 4483.8036308474. The cubic root of 20104495 is about 271.9136791757.

Adding to 20104495 its reverse (59440102), we get a palindrome (79544597).

The spelling of 20104495 in words is "twenty million, one hundred four thousand, four hundred ninety-five".