133778156 has 12 divisors (see below), whose sum is σ = 235420920. Its totient is φ = 66515040.

The previous prime is 133778153. The next prime is 133778167. The reversal of 133778156 is 651877331.

133778156 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (133778153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92705 + ... + 94136.

It is an arithmetic number, because the mean of its divisors is an integer number (19618410).

Almost surely, 2^133778156 is an apocalyptic number.

It is an amenable number.

133778156 is a deficient number, since it is larger than the sum of its proper divisors (101642764).

133778156 is a wasteful number, since it uses less digits than its factorization.

133778156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187024 (or 187022 counting only the distinct ones).

The product of its digits is 105840, while the sum is 41.

The square root of 133778156 is about 11566.2507321949. The cubic root of 133778156 is about 511.4404439915.

The spelling of 133778156 in words is "one hundred thirty-three million, seven hundred seventy-eight thousand, one hundred fifty-six".