136628856 has 240 divisors, whose sum is σ = 480858840. Its totient is φ = 35925120.

The previous prime is 136628819. The next prime is 136628887. The reversal of 136628856 is 658826631.

136628856 is a `hidden beast` number, since 1 + 366 + 288 + 5 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

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 59 ways as a sum of consecutive naturals, for example, 412611 + ... + 412941.

Almost surely, 2^136628856 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 136628856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240429420).

136628856 is an abundant number, since it is smaller than the sum of its proper divisors (344229984).

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

136628856 is a wasteful number, since it uses less digits than its factorization.

136628856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376 (or 356 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 136628856 is about 11688.8346724556. The cubic root of 136628856 is about 515.0477298899.

The spelling of 136628856 in words is "one hundred thirty-six million, six hundred twenty-eight thousand, eight hundred fifty-six".