168228794 has 4 divisors (see below), whose sum is σ = 252343194. Its totient is φ = 84114396.

The previous prime is 168228773. The next prime is 168228887. The reversal of 168228794 is 497822861.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 97752769 + 70476025 = 9887^2 + 8395^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42057197 + ... + 42057200.

Almost surely, 2^168228794 is an apocalyptic number.

168228794 is a deficient number, since it is larger than the sum of its proper divisors (84114400).

168228794 is an equidigital number, since it uses as much as digits as its factorization.

168228794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84114399.

The product of its digits is 387072, while the sum is 47.

The square root of 168228794 is about 12970.3043140861. The cubic root of 168228794 is about 552.0352078817.

The spelling of 168228794 in words is "one hundred sixty-eight million, two hundred twenty-eight thousand, seven hundred ninety-four".