166140286 has 32 divisors (see below), whose sum is σ = 291876480. Its totient is φ = 70212096.

The previous prime is 166140281. The next prime is 166140301. The reversal of 166140286 is 682041661.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166140281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11275 + ... + 21433.

It is an arithmetic number, because the mean of its divisors is an integer number (9121140).

Almost surely, 2^166140286 is an apocalyptic number.

166140286 is a deficient number, since it is larger than the sum of its proper divisors (125736194).

166140286 is a wasteful number, since it uses less digits than its factorization.

166140286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10228.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 166140286 is about 12889.5417296349. The cubic root of 166140286 is about 549.7412402633.

The spelling of 166140286 in words is "one hundred sixty-six million, one hundred forty thousand, two hundred eighty-six".