168139710 has 48 divisors (see below), whose sum is σ = 437851440. Its totient is φ = 44766720.

The previous prime is 168139669. The next prime is 168139711. The reversal of 168139710 is 17931861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168139711) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 82605 + ... + 84615.

It is an arithmetic number, because the mean of its divisors is an integer number (9121905).

Almost surely, 2^168139710 is an apocalyptic number.

168139710 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

168139710 is an abundant number, since it is smaller than the sum of its proper divisors (269711730).

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

168139710 is a wasteful number, since it uses less digits than its factorization.

168139710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2953 (or 2950 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 168139710 is about 12966.8697070650. The cubic root of 168139710 is about 551.9377489661.

The spelling of 168139710 in words is "one hundred sixty-eight million, one hundred thirty-nine thousand, seven hundred ten".