136657730 has 32 divisors (see below), whose sum is σ = 284135040. Its totient is φ = 46769920.

The previous prime is 136657727. The next prime is 136657739. The reversal of 136657730 is 37756631.

It is not an unprimeable number, because it can be changed into a prime (136657739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34670 + ... + 38409.

It is an arithmetic number, because the mean of its divisors is an integer number (8879220).

Almost surely, 2^136657730 is an apocalyptic number.

136657730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

136657730 is an abundant number, since it is smaller than the sum of its proper divisors (147477310).

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

136657730 is a wasteful number, since it uses less digits than its factorization.

136657730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73114.

The product of its (nonzero) digits is 79380, while the sum is 38.

The square root of 136657730 is about 11690.0697174995. The cubic root of 136657730 is about 515.0840092946.

The spelling of 136657730 in words is "one hundred thirty-six million, six hundred fifty-seven thousand, seven hundred thirty".