20079005 has 4 divisors (see below), whose sum is σ = 24094812. Its totient is φ = 16063200.

The previous prime is 20079001. The next prime is 20079043. The reversal of 20079005 is 50097002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9972964 + 10106041 = 3158^2 + 3179^2 .

It is not a de Polignac number, because 20079005 - 2² = 20079001 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20079001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2007896 + ... + 2007905.

It is an arithmetic number, because the mean of its divisors is an integer number (6023703).

Almost surely, 2^20079005 is an apocalyptic number.

It is an amenable number.

20079005 is a deficient number, since it is larger than the sum of its proper divisors (4015807).

20079005 is an equidigital number, since it uses as much as digits as its factorization.

20079005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4015806.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 20079005 is about 4480.9602765479. The cubic root of 20079005 is about 271.7987129953.

The spelling of 20079005 in words is "twenty million, seventy-nine thousand, five".