133768172 has 48 divisors (see below), whose sum is σ = 258168960. Its totient is φ = 60383232.

The previous prime is 133768171. The next prime is 133768259. The reversal of 133768172 is 271867331.

It is not an unprimeable number, because it can be changed into a prime (133768171) 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 15 ways as a sum of consecutive naturals, for example, 198428 + ... + 199100.

It is an arithmetic number, because the mean of its divisors is an integer number (5378520).

Almost surely, 2^133768172 is an apocalyptic number.

It is an amenable number.

133768172 is a deficient number, since it is larger than the sum of its proper divisors (124400788).

133768172 is a wasteful number, since it uses less digits than its factorization.

133768172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810 (or 808 counting only the distinct ones).

The product of its digits is 42336, while the sum is 38.

The square root of 133768172 is about 11565.8191236073. The cubic root of 133768172 is about 511.4277205679.

The spelling of 133768172 in words is "one hundred thirty-three million, seven hundred sixty-eight thousand, one hundred seventy-two".