133655256 has 96 divisors (see below), whose sum is σ = 415303200. Its totient is φ = 38039040.

The previous prime is 133655251. The next prime is 133655257. The reversal of 133655256 is 652556331.

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

It is a self number, because there is not a number n which added to its sum of digits gives 133655256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133655251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 256276 + ... + 256796.

It is an arithmetic number, because the mean of its divisors is an integer number (4326075).

Almost surely, 2^133655256 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 133655256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207651600).

133655256 is an abundant number, since it is smaller than the sum of its proper divisors (281647944).

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

133655256 is a wasteful number, since it uses less digits than its factorization.

133655256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049 (or 1042 counting only the distinct ones).

The product of its digits is 81000, while the sum is 36.

The square root of 133655256 is about 11560.9366402554. The cubic root of 133655256 is about 511.2837784327.

The spelling of 133655256 in words is "one hundred thirty-three million, six hundred fifty-five thousand, two hundred fifty-six".