136168398 has 64 divisors (see below), whose sum is σ = 316872000. Its totient is φ = 43287552.

The previous prime is 136168397. The next prime is 136168423. The reversal of 136168398 is 893861631.

It is a happy number.

136168398 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×136168398² = 37083665227772808, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136168393) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 138886 + ... + 139862.

It is an arithmetic number, because the mean of its divisors is an integer number (4951125).

Almost surely, 2^136168398 is an apocalyptic number.

136168398 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 136168398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158436000).

136168398 is an abundant number, since it is smaller than the sum of its proper divisors (180703602).

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

136168398 is a wasteful number, since it uses less digits than its factorization.

136168398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106 (or 1100 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 136168398 is about 11669.1215607688. The cubic root of 136168398 is about 514.4684848396.

The spelling of 136168398 in words is "one hundred thirty-six million, one hundred sixty-eight thousand, three hundred ninety-eight".