168908456 has 16 divisors (see below), whose sum is σ = 322679700. Its totient is φ = 82860544.

The previous prime is 168908437. The next prime is 168908477. The reversal of 168908456 is 654809861.

It can be written as a sum of positive squares in 2 ways, for example, as 147136900 + 21771556 = 12130^2 + 4666^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 168908456.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 198761 + ... + 199608.

Almost surely, 2^168908456 is an apocalyptic number.

It is an amenable number.

168908456 is a deficient number, since it is larger than the sum of its proper divisors (153771244).

168908456 is a wasteful number, since it uses less digits than its factorization.

168908456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398428 (or 398424 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 47.

The square root of 168908456 is about 12996.4785999901. The cubic root of 168908456 is about 552.7776356923. Note that the first 3 decimals are identical.

The spelling of 168908456 in words is "one hundred sixty-eight million, nine hundred eight thousand, four hundred fifty-six".