196117287 has 16 divisors (see below), whose sum is σ = 277385472. Its totient is φ = 122825600.

The previous prime is 196117283. The next prime is 196117307. The reversal of 196117287 is 782711691.

It is a cyclic number.

It is not a de Polignac number, because 196117287 - 2² = 196117283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196117283) 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, 26662 + ... + 33212.

It is an arithmetic number, because the mean of its divisors is an integer number (17336592).

Almost surely, 2^196117287 is an apocalyptic number.

196117287 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

196117287 is a deficient number, since it is larger than the sum of its proper divisors (81268185).

196117287 is a wasteful number, since it uses less digits than its factorization.

196117287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7158.

The product of its digits is 42336, while the sum is 42.

The square root of 196117287 is about 14004.1881949651. The cubic root of 196117287 is about 580.9944167579.

The spelling of 196117287 in words is "one hundred ninety-six million, one hundred seventeen thousand, two hundred eighty-seven".