168239450 has 24 divisors (see below), whose sum is σ = 317218908. Its totient is φ = 66372480.

The previous prime is 168239443. The next prime is 168239453. The reversal of 168239450 is 54932861.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 65399569 + 102839881 = 8087^2 + 10141^2 .

It is not an unprimeable number, because it can be changed into a prime (168239453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19397 + ... + 26696.

Almost surely, 2^168239450 is an apocalyptic number.

168239450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

168239450 is a deficient number, since it is larger than the sum of its proper divisors (148979458).

168239450 is a wasteful number, since it uses less digits than its factorization.

168239450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46178 (or 46173 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 168239450 is about 12970.7150920834. The cubic root of 168239450 is about 552.0468633636.

The spelling of 168239450 in words is "one hundred sixty-eight million, two hundred thirty-nine thousand, four hundred fifty".