168136128 has 56 divisors (see below), whose sum is σ = 494294160. Its totient is φ = 56044800.

The previous prime is 168136109. The next prime is 168136139. The reversal of 168136128 is 821631861.

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 168136092 and 168136101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46923 + ... + 50378.

Almost surely, 2^168136128 is an apocalyptic number.

168136128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

168136128 is an abundant number, since it is smaller than the sum of its proper divisors (326158032).

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

168136128 is an equidigital number, since it uses as much as digits as its factorization.

168136128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97322 (or 97306 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 168136128 is about 12966.7315850988. The cubic root of 168136128 is about 551.9338294973.

Adding to 168136128 its reverse (821631861), we get a palindrome (989767989).

The spelling of 168136128 in words is "one hundred sixty-eight million, one hundred thirty-six thousand, one hundred twenty-eight".