208020147 has 4 divisors (see below), whose sum is σ = 277360200. Its totient is φ = 138680096.

The previous prime is 208020107. The next prime is 208020149. The reversal of 208020147 is 741020802.

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 208020147 - 2¹⁵ = 207987379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (208020149) 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, 34670022 + ... + 34670027.

It is an arithmetic number, because the mean of its divisors is an integer number (69340050).

Almost surely, 2^208020147 is an apocalyptic number.

208020147 is a deficient number, since it is larger than the sum of its proper divisors (69340053).

208020147 is an equidigital number, since it uses as much as digits as its factorization.

208020147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69340052.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 208020147 is about 14422.9035564965. The cubic root of 208020147 is about 592.5183430024.

Adding to 208020147 its reverse (741020802), we get a palindrome (949040949).

The spelling of 208020147 in words is "two hundred eight million, twenty thousand, one hundred forty-seven".