208942188 has 48 divisors (see below), whose sum is σ = 600042240. Its totient is φ = 55105344.

The previous prime is 208942169. The next prime is 208942193. The reversal of 208942188 is 881249802.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 94578 + ... + 96761.

It is an arithmetic number, because the mean of its divisors is an integer number (12500880).

Almost surely, 2^208942188 is an apocalyptic number.

208942188 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

208942188 is an abundant number, since it is smaller than the sum of its proper divisors (391100052).

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

208942188 is a wasteful number, since it uses less digits than its factorization.

208942188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191366 (or 191364 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 42.

The square root of 208942188 is about 14454.8326866830. The cubic root of 208942188 is about 593.3924907000.

The spelling of 208942188 in words is "two hundred eight million, nine hundred forty-two thousand, one hundred eighty-eight".