168791740 has 48 divisors (see below), whose sum is σ = 382788000. Its totient is φ = 62150400.

The previous prime is 168791729. The next prime is 168791773. The reversal of 168791740 is 47197861.

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, 129090 + ... + 130390.

It is an arithmetic number, because the mean of its divisors is an integer number (7974750).

Almost surely, 2^168791740 is an apocalyptic number.

168791740 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 168791740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191394000).

168791740 is an abundant number, since it is smaller than the sum of its proper divisors (213996260).

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

168791740 is a wasteful number, since it uses less digits than its factorization.

168791740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1822 (or 1820 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 43.

The square root of 168791740 is about 12991.9875307822. The cubic root of 168791740 is about 552.6502829585.

The spelling of 168791740 in words is "one hundred sixty-eight million, seven hundred ninety-one thousand, seven hundred forty".