168736920 has 96 divisors (see below), whose sum is σ = 556461360. Its totient is φ = 40902400.

The previous prime is 168736903. The next prime is 168736921. The reversal of 168736920 is 29637861.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168736921) 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, 8710 + ... + 20330.

Almost surely, 2^168736920 is an apocalyptic number.

168736920 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 168736920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278230680).

168736920 is an abundant number, since it is smaller than the sum of its proper divisors (387724440).

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

168736920 is a wasteful number, since it uses less digits than its factorization.

168736920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11657 (or 11642 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 168736920 is about 12989.8775975757. The cubic root of 168736920 is about 552.5904467584.

The spelling of 168736920 in words is "one hundred sixty-eight million, seven hundred thirty-six thousand, nine hundred twenty".