168121488 has 80 divisors (see below), whose sum is σ = 449374016. Its totient is φ = 54120960.

The previous prime is 168121487. The next prime is 168121493. The reversal of 168121488 is 884121861.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (168121487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 321195 + ... + 321717.

Almost surely, 2^168121488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168121488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224687008).

168121488 is an abundant number, since it is smaller than the sum of its proper divisors (281252528).

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

168121488 is a wasteful number, since it uses less digits than its factorization.

168121488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752 (or 746 counting only the distinct ones).

The product of its digits is 24576, while the sum is 39.

The square root of 168121488 is about 12966.1670512145. The cubic root of 168121488 is about 551.9178096490.

The spelling of 168121488 in words is "one hundred sixty-eight million, one hundred twenty-one thousand, four hundred eighty-eight".