168030040 has 64 divisors (see below), whose sum is σ = 404157600. Its totient is φ = 62650368.

The previous prime is 168030007. The next prime is 168030059. The reversal of 168030040 is 40030861.

168030040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 168029993 and 168030020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72987 + ... + 75253.

Almost surely, 2^168030040 is an apocalyptic number.

168030040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168030040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202078800).

168030040 is an abundant number, since it is smaller than the sum of its proper divisors (236127560).

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

168030040 is a wasteful number, since it uses less digits than its factorization.

168030040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2404 (or 2400 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 168030040 is about 12962.6401631766. The cubic root of 168030040 is about 551.8177214441.

The spelling of 168030040 in words is "one hundred sixty-eight million, thirty thousand, forty".