208293190 has 32 divisors (see below), whose sum is σ = 437612544. Its totient is φ = 69894240.

The previous prime is 208293149. The next prime is 208293191. The reversal of 208293190 is 91392802.

It is a super-2 number, since 2×208293190² = 86772106000752200, which contains 22 as substring.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208293191) 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 15 ways as a sum of consecutive naturals, for example, 28366 + ... + 34945.

It is an arithmetic number, because the mean of its divisors is an integer number (13675392).

Almost surely, 2^208293190 is an apocalyptic number.

208293190 is an abundant number, since it is smaller than the sum of its proper divisors (229319354).

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

208293190 is a wasteful number, since it uses less digits than its factorization.

208293190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63372.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 208293190 is about 14432.3660568876. The cubic root of 208293190 is about 592.7774721549. Note that the first 3 decimals are identical.

The spelling of 208293190 in words is "two hundred eight million, two hundred ninety-three thousand, one hundred ninety".