20000147 has 2 divisors, whose sum is σ = 20000148. Its totient is φ = 20000146.

The previous prime is 20000107. The next prime is 20000153. The reversal of 20000147 is 74100002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20000147 - 2⁸ = 19999891 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20000107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000073 + 10000074.

It is an arithmetic number, because the mean of its divisors is an integer number (10000074).

Almost surely, 2^20000147 is an apocalyptic number.

20000147 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000147 is an equidigital number, since it uses as much as digits as its factorization.

20000147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 20000147 is about 4472.1523900690. The cubic root of 20000147 is about 271.4424266902.

Adding to 20000147 its reverse (74100002), we get a palindrome (94100149).

The spelling of 20000147 in words is "twenty million, one hundred forty-seven", and thus it is an aban number.