189350208 has 84 divisors (see below), whose sum is σ = 548495220. Its totient is φ = 62447616.

The previous prime is 189350207. The next prime is 189350279. The reversal of 189350208 is 802053981.

It can be written as a sum of positive squares in 2 ways, for example, as 145154304 + 44195904 = 12048^2 + 6648^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189350207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54178 + ... + 57566.

It is an arithmetic number, because the mean of its divisors is an integer number (6529705).

Almost surely, 2^189350208 is an apocalyptic number.

189350208 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189350208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274247610).

189350208 is an abundant number, since it is smaller than the sum of its proper divisors (359145012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189350208 is a wasteful number, since it uses less digits than its factorization.

189350208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3504 (or 3491 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 189350208 is about 13760.4581319083. The cubic root of 189350208 is about 574.2335931651.

The spelling of 189350208 in words is "one hundred eighty-nine million, three hundred fifty thousand, two hundred eight".