168266040 has 64 divisors (see below), whose sum is σ = 509306400. Its totient is φ = 44470272.

The previous prime is 168266023. The next prime is 168266069. The reversal of 168266040 is 40662861.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 168265992 and 168266010.

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 in 15 ways as a sum of consecutive naturals, for example, 7356 + ... + 19764.

Almost surely, 2^168266040 is an apocalyptic number.

168266040 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 168266040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254653200).

168266040 is an abundant number, since it is smaller than the sum of its proper divisors (341040360).

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

168266040 is a wasteful number, since it uses less digits than its factorization.

168266040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12536 (or 12532 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 168266040 is about 12971.7400528996. The cubic root of 168266040 is about 552.0759452324.

The spelling of 168266040 in words is "one hundred sixty-eight million, two hundred sixty-six thousand, forty".