168381040 has 40 divisors (see below), whose sum is σ = 412094160. Its totient is φ = 63806976.

The previous prime is 168381029. The next prime is 168381061. The reversal of 168381040 is 40183861.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 168380993 and 168381011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53869 + ... + 56908.

It is an arithmetic number, because the mean of its divisors is an integer number (10302354).

Almost surely, 2^168381040 is an apocalyptic number.

168381040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168381040 is an abundant number, since it is smaller than the sum of its proper divisors (243713120).

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

168381040 is a wasteful number, since it uses less digits than its factorization.

168381040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110809 (or 110803 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 168381040 is about 12976.1720087243. The cubic root of 168381040 is about 552.2016871341.

The spelling of 168381040 in words is "one hundred sixty-eight million, three hundred eighty-one thousand, forty".