168146840 has 32 divisors (see below), whose sum is σ = 379648080. Its totient is φ = 67024512.

The previous prime is 168146837. The next prime is 168146861. The reversal of 168146840 is 48641861.

It is a junction number, because it is equal to n+sod(n) for n = 168146794 and 168146803.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4547 + ... + 18893.

Almost surely, 2^168146840 is an apocalyptic number.

168146840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168146840 is an abundant number, since it is smaller than the sum of its proper divisors (211501240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168146840 is a wasteful number, since it uses less digits than its factorization.

168146840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14651 (or 14647 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 168146840 is about 12967.1446355780. The cubic root of 168146840 is about 551.9455505349.

The spelling of 168146840 in words is "one hundred sixty-eight million, one hundred forty-six thousand, eight hundred forty".