133557032 has 64 divisors (see below), whose sum is σ = 308862720. Its totient is φ = 52835328.

The previous prime is 133557029. The next prime is 133557041. The reversal of 133557032 is 230755331.

It is a junction number, because it is equal to n+sod(n) for n = 133556986 and 133557004.

It is an unprimeable number.

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, 49133 + ... + 51779.

It is an arithmetic number, because the mean of its divisors is an integer number (4825980).

Almost surely, 2^133557032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133557032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154431360).

133557032 is an abundant number, since it is smaller than the sum of its proper divisors (175305688).

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

133557032 is a wasteful number, since it uses less digits than its factorization.

133557032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2730 (or 2726 counting only the distinct ones).

The product of its (nonzero) digits is 9450, while the sum is 29.

The square root of 133557032 is about 11556.6877607730. The cubic root of 133557032 is about 511.1584992959.

The spelling of 133557032 in words is "one hundred thirty-three million, five hundred fifty-seven thousand, thirty-two".