133312448 has 28 divisors (see below), whose sum is σ = 265416792. Its totient is φ = 66435840.

The previous prime is 133312423. The next prime is 133312451. The reversal of 133312448 is 844213331.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 133312448.

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, 17003 + ... + 23573.

Almost surely, 2^133312448 is an apocalyptic number.

It is an amenable number.

133312448 is a deficient number, since it is larger than the sum of its proper divisors (132104344).

133312448 is an equidigital number, since it uses as much as digits as its factorization.

133312448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6900 (or 6890 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 133312448 is about 11546.1009869133. The cubic root of 133312448 is about 510.8462791563.

Adding to 133312448 its reverse (844213331), we get a palindrome (977525779).

The spelling of 133312448 in words is "one hundred thirty-three million, three hundred twelve thousand, four hundred forty-eight".