133502432 has 48 divisors (see below), whose sum is σ = 301748832. Its totient is φ = 56954880.

The previous prime is 133502431. The next prime is 133502449. The reversal of 133502432 is 234205331.

It is a junction number, because it is equal to n+sod(n) for n = 133502398 and 133502407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133502431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52748 + ... + 55220.

It is an arithmetic number, because the mean of its divisors is an integer number (6286434).

Almost surely, 2^133502432 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 133502432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150874416).

133502432 is an abundant number, since it is smaller than the sum of its proper divisors (168246400).

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

133502432 is a wasteful number, since it uses less digits than its factorization.

133502432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2731 (or 2723 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 133502432 is about 11554.3252507448. The cubic root of 133502432 is about 511.0888335316.

Adding to 133502432 its reverse (234205331), we get a palindrome (367707763).

The spelling of 133502432 in words is "one hundred thirty-three million, five hundred two thousand, four hundred thirty-two".