133504512 has 80 divisors (see below), whose sum is σ = 371226240. Its totient is φ = 42555392.

The previous prime is 133504499. The next prime is 133504531. The reversal of 133504512 is 215405331.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33439 + ... + 37217.

It is an arithmetic number, because the mean of its divisors is an integer number (4640328).

Almost surely, 2^133504512 is an apocalyptic number.

133504512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133504512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185613120).

133504512 is an abundant number, since it is smaller than the sum of its proper divisors (237721728).

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

133504512 is an equidigital number, since it uses as much as digits as its factorization.

133504512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3823 (or 3807 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 133504512 is about 11554.4152599775. The cubic root of 133504512 is about 511.0914878134.

Adding to 133504512 its reverse (215405331), we get a palindrome (348909843).

The spelling of 133504512 in words is "one hundred thirty-three million, five hundred four thousand, five hundred twelve".