190212866 has 16 divisors (see below), whose sum is σ = 295052544. Its totient is φ = 91915824.

The previous prime is 190212851. The next prime is 190212871. The reversal of 190212866 is 668212091.

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 7 ways as a sum of consecutive naturals, for example, 6290 + ... + 20493.

It is an arithmetic number, because the mean of its divisors is an integer number (18440784).

Almost surely, 2^190212866 is an apocalyptic number.

190212866 is a deficient number, since it is larger than the sum of its proper divisors (104839678).

190212866 is a wasteful number, since it uses less digits than its factorization.

190212866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26905.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 190212866 is about 13791.7680519939. The cubic root of 190212866 is about 575.1043198249.

The spelling of 190212866 in words is "one hundred ninety million, two hundred twelve thousand, eight hundred sixty-six".