133317628 has 6 divisors (see below), whose sum is σ = 233305856. Its totient is φ = 66658812.

The previous prime is 133317619. The next prime is 133317629. The reversal of 133317628 is 826713331.

133317628 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 133317593 and 133317602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133317629) 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 as a sum of consecutive naturals, namely, 16664700 + ... + 16664707.

Almost surely, 2^133317628 is an apocalyptic number.

It is an amenable number.

133317628 is a deficient number, since it is larger than the sum of its proper divisors (99988228).

133317628 is a wasteful number, since it uses less digits than its factorization.

133317628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33329411 (or 33329409 counting only the distinct ones).

The product of its digits is 18144, while the sum is 34.

The square root of 133317628 is about 11546.3253028832. The cubic root of 133317628 is about 510.8528955663.

The spelling of 133317628 in words is "one hundred thirty-three million, three hundred seventeen thousand, six hundred twenty-eight".