133368448 has 128 divisors (see below), whose sum is σ = 303552000. Its totient is φ = 58060800.

The previous prime is 133368437. The next prime is 133368481. The reversal of 133368448 is 844863331.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 133368448.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2186338 + ... + 2186398.

It is an arithmetic number, because the mean of its divisors is an integer number (2371500).

Almost surely, 2^133368448 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 133368448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151776000).

133368448 is an abundant number, since it is smaller than the sum of its proper divisors (170183552).

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

133368448 is a wasteful number, since it uses less digits than its factorization.

133368448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 142 counting only the distinct ones).

The product of its digits is 165888, while the sum is 40.

The square root of 133368448 is about 11548.5257933643. The cubic root of 133368448 is about 510.9177988264.

The spelling of 133368448 in words is "one hundred thirty-three million, three hundred sixty-eight thousand, four hundred forty-eight".