133683128 has 16 divisors (see below), whose sum is σ = 251036280. Its totient is φ = 66740128.

The previous prime is 133683113. The next prime is 133683133. The reversal of 133683128 is 821386331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6926 + ... + 17757.

Almost surely, 2^133683128 is an apocalyptic number.

It is an amenable number.

133683128 is a deficient number, since it is larger than the sum of its proper divisors (117353152).

133683128 is a wasteful number, since it uses less digits than its factorization.

133683128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25366 (or 25362 counting only the distinct ones).

The product of its digits is 20736, while the sum is 35.

The square root of 133683128 is about 11562.1420160799. The cubic root of 133683128 is about 511.3193164066.

The spelling of 133683128 in words is "one hundred thirty-three million, six hundred eighty-three thousand, one hundred twenty-eight".