208189004 has 24 divisors (see below), whose sum is σ = 406067760. Its totient is φ = 92814336.

The previous prime is 208189001. The next prime is 208189013. The reversal of 208189004 is 400981802.

It is a happy number.

It is a super-2 number, since 2×208189004² = 86685322773024032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (208189001) 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 7 ways as a sum of consecutive naturals, for example, 79277 + ... + 81860.

It is an arithmetic number, because the mean of its divisors is an integer number (16919490).

Almost surely, 2^208189004 is an apocalyptic number.

It is an amenable number.

208189004 is a deficient number, since it is larger than the sum of its proper divisors (197878756).

208189004 is a wasteful number, since it uses less digits than its factorization.

208189004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161177 (or 161175 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 208189004 is about 14428.7561487468. The cubic root of 208189004 is about 592.6786220458.

The spelling of 208189004 in words is "two hundred eight million, one hundred eighty-nine thousand, four".