136280844 has 72 divisors (see below), whose sum is σ = 414435840. Its totient is φ = 36886752.

The previous prime is 136280839. The next prime is 136280869. The reversal of 136280844 is 448082631.

136280844 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 136280799 and 136280808.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9444 + ... + 19019.

Almost surely, 2^136280844 is an apocalyptic number.

136280844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

136280844 is an abundant number, since it is smaller than the sum of its proper divisors (278154996).

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

136280844 is a wasteful number, since it uses less digits than its factorization.

136280844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28499 (or 28494 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 136280844 is about 11673.9386669624. The cubic root of 136280844 is about 514.6100595552.

The spelling of 136280844 in words is "one hundred thirty-six million, two hundred eighty thousand, eight hundred forty-four".