168214090 has 32 divisors (see below), whose sum is σ = 332325504. Its totient is φ = 60795840.

The previous prime is 168214073. The next prime is 168214093. The reversal of 168214090 is 90412861.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (168214093) 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, 13792 + ... + 22948.

It is an arithmetic number, because the mean of its divisors is an integer number (10385172).

Almost surely, 2^168214090 is an apocalyptic number.

168214090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

168214090 is a deficient number, since it is larger than the sum of its proper divisors (164111414).

168214090 is a wasteful number, since it uses less digits than its factorization.

168214090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9342.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 168214090 is about 12969.7374684301. The cubic root of 168214090 is about 552.0191239086.

The spelling of 168214090 in words is "one hundred sixty-eight million, two hundred fourteen thousand, ninety".