168451424 has 12 divisors (see below), whose sum is σ = 331638804. Its totient is φ = 84225696.

The previous prime is 168451399. The next prime is 168451433. The reversal of 168451424 is 424154861.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 2632022 + ... + 2632085.

It is an arithmetic number, because the mean of its divisors is an integer number (27636567).

Almost surely, 2^168451424 is an apocalyptic number.

It is an amenable number.

168451424 is a deficient number, since it is larger than the sum of its proper divisors (163187380).

168451424 is an equidigital number, since it uses as much as digits as its factorization.

168451424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5264117 (or 5264109 counting only the distinct ones).

The product of its digits is 30720, while the sum is 35.

The square root of 168451424 is about 12978.8837732680. The cubic root of 168451424 is about 552.2786173106.

The spelling of 168451424 in words is "one hundred sixty-eight million, four hundred fifty-one thousand, four hundred twenty-four".