136481688 has 48 divisors (see below), whose sum is σ = 422444880. Its totient is φ = 38994624.

The previous prime is 136481671. The next prime is 136481689. The reversal of 136481688 is 886184631.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136481689) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134895 + ... + 135902.

It is an arithmetic number, because the mean of its divisors is an integer number (8800935).

Almost surely, 2^136481688 is an apocalyptic number.

136481688 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

136481688 is an abundant number, since it is smaller than the sum of its proper divisors (285963192).

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

136481688 is a wasteful number, since it uses less digits than its factorization.

136481688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270816 (or 270809 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 136481688 is about 11682.5377380088. The cubic root of 136481688 is about 514.8627377929.

The spelling of 136481688 in words is "one hundred thirty-six million, four hundred eighty-one thousand, six hundred eighty-eight".