20073147 has 4 divisors (see below), whose sum is σ = 26764200. Its totient is φ = 13382096.

The previous prime is 20073143. The next prime is 20073161. The reversal of 20073147 is 74137002.

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

It is a cyclic number.

It is not a de Polignac number, because 20073147 - 2² = 20073143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20073143) 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 3 ways as a sum of consecutive naturals, for example, 3345522 + ... + 3345527.

It is an arithmetic number, because the mean of its divisors is an integer number (6691050).

Almost surely, 2^20073147 is an apocalyptic number.

20073147 is a deficient number, since it is larger than the sum of its proper divisors (6691053).

20073147 is an equidigital number, since it uses as much as digits as its factorization.

20073147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6691052.

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 20073147 is about 4480.3065743317. The cubic root of 20073147 is about 271.7722782238.

The spelling of 20073147 in words is "twenty million, seventy-three thousand, one hundred forty-seven".