136786216 has 64 divisors (see below), whose sum is σ = 316327680. Its totient is φ = 54113280.

The previous prime is 136786189. The next prime is 136786261. The reversal of 136786216 is 612687631.

It is a happy number.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

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, 49101 + ... + 51811.

It is an arithmetic number, because the mean of its divisors is an integer number (4942620).

Almost surely, 2^136786216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136786216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158163840).

136786216 is an abundant number, since it is smaller than the sum of its proper divisors (179541464).

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

136786216 is a wasteful number, since it uses less digits than its factorization.

136786216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2794 (or 2790 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 136786216 is about 11695.5639453598. The cubic root of 136786216 is about 515.2453865633.

The spelling of 136786216 in words is "one hundred thirty-six million, seven hundred eighty-six thousand, two hundred sixteen".