136675728 has 80 divisors (see below), whose sum is σ = 448364160. Its totient is φ = 39049344.

The previous prime is 136675727. The next prime is 136675751. The reversal of 136675728 is 827576631.

136675728 is a `hidden beast` number, since 13 + 6 + 67 + 572 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (136675723) 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, 19575 + ... + 25622.

It is an arithmetic number, because the mean of its divisors is an integer number (5604552).

Almost surely, 2^136675728 is an apocalyptic number.

136675728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

136675728 is an abundant number, since it is smaller than the sum of its proper divisors (311688432).

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

136675728 is a wasteful number, since it uses less digits than its factorization.

136675728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45221 (or 45209 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 136675728 is about 11690.8394908150. The cubic root of 136675728 is about 515.1066207123.

The spelling of 136675728 in words is "one hundred thirty-six million, six hundred seventy-five thousand, seven hundred twenty-eight".