168841424 has 20 divisors (see below), whose sum is σ = 327332100. Its totient is φ = 84368640.

The previous prime is 168841423. The next prime is 168841427. The reversal of 168841424 is 424148861.

It can be written as a sum of positive squares in 2 ways, for example, as 25321024 + 143520400 = 5032^2 + 11980^2 .

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168841423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47054 + ... + 50514.

It is an arithmetic number, because the mean of its divisors is an integer number (16366605).

Almost surely, 2^168841424 is an apocalyptic number.

It is an amenable number.

168841424 is a deficient number, since it is larger than the sum of its proper divisors (158490676).

168841424 is a wasteful number, since it uses less digits than its factorization.

168841424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6518 (or 6512 counting only the distinct ones).

The product of its digits is 49152, while the sum is 38.

The square root of 168841424 is about 12993.8994916845. The cubic root of 168841424 is about 552.7045020078.

The spelling of 168841424 in words is "one hundred sixty-eight million, eight hundred forty-one thousand, four hundred twenty-four".