20383147 has 2 divisors, whose sum is σ = 20383148. Its totient is φ = 20383146.

The previous prime is 20383141. The next prime is 20383163. The reversal of 20383147 is 74138302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20383147 - 2⁷ = 20383019 is a prime.

It is not a weakly prime, because it can be changed into another prime (20383141) 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 as a sum of consecutive naturals, namely, 10191573 + 10191574.

It is an arithmetic number, because the mean of its divisors is an integer number (10191574).

Almost surely, 2^20383147 is an apocalyptic number.

20383147 is a deficient number, since it is larger than the sum of its proper divisors (1).

20383147 is an equidigital number, since it uses as much as digits as its factorization.

20383147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 20383147 is about 4514.7698723191. The cubic root of 20383147 is about 273.1641773452.

The spelling of 20383147 in words is "twenty million, three hundred eighty-three thousand, one hundred forty-seven".