133961628 has 24 divisors (see below), whose sum is σ = 329029120. Its totient is φ = 42303600.

The previous prime is 133961627. The next prime is 133961657. The reversal of 133961628 is 826169331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133961627) 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 7 ways as a sum of consecutive naturals, for example, 293548 + ... + 294003.

Almost surely, 2^133961628 is an apocalyptic number.

It is an amenable number.

133961628 is an abundant number, since it is smaller than the sum of its proper divisors (195067492).

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

133961628 is a wasteful number, since it uses less digits than its factorization.

133961628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587577 (or 587575 counting only the distinct ones).

The product of its digits is 46656, while the sum is 39.

The square root of 133961628 is about 11574.1793661581. The cubic root of 133961628 is about 511.6741446680.

The spelling of 133961628 in words is "one hundred thirty-three million, nine hundred sixty-one thousand, six hundred twenty-eight".