136720115 has 16 divisors (see below), whose sum is σ = 188939520. Its totient is φ = 93032160.

The previous prime is 136720097. The next prime is 136720121. The reversal of 136720115 is 511027631.

136720115 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 136720115 - 2¹⁴ = 136703731 is a prime.

It is a super-2 number, since 2×136720115² = 37384779691226450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10325 + ... + 19494.

It is an arithmetic number, because the mean of its divisors is an integer number (11808720).

Almost surely, 2^136720115 is an apocalyptic number.

136720115 is a deficient number, since it is larger than the sum of its proper divisors (52219405).

136720115 is a wasteful number, since it uses less digits than its factorization.

136720115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29962.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 136720115 is about 11692.7377033781. The cubic root of 136720115 is about 515.1623769250.

Adding to 136720115 its reverse (511027631), we get a palindrome (647747746).

The spelling of 136720115 in words is "one hundred thirty-six million, seven hundred twenty thousand, one hundred fifteen".