136805216 has 24 divisors (see below), whose sum is σ = 270273024. Its totient is φ = 68164480.

The previous prime is 136805197. The next prime is 136805237. The reversal of 136805216 is 612508631.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2081 + ... + 16671.

It is an arithmetic number, because the mean of its divisors is an integer number (11261376).

Almost surely, 2^136805216 is an apocalyptic number.

136805216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

136805216 is a deficient number, since it is larger than the sum of its proper divisors (133467808).

136805216 is a wasteful number, since it uses less digits than its factorization.

136805216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14894 (or 14886 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 136805216 is about 11696.3761909405. The cubic root of 136805216 is about 515.2692418156.

The spelling of 136805216 in words is "one hundred thirty-six million, eight hundred five thousand, two hundred sixteen".