133544048 has 40 divisors (see below), whose sum is σ = 283481856. Its totient is φ = 60440000.

The previous prime is 133544041. The next prime is 133544053. The reversal of 133544048 is 840445331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133544041) 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, 42665 + ... + 45687.

Almost surely, 2^133544048 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 133544048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141740928).

133544048 is an abundant number, since it is smaller than the sum of its proper divisors (149937808).

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

133544048 is a wasteful number, since it uses less digits than its factorization.

133544048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3293 (or 3287 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 133544048 is about 11556.1259944672. The cubic root of 133544048 is about 511.1419343450.

Adding to 133544048 its reverse (840445331), we get a palindrome (973989379).

The spelling of 133544048 in words is "one hundred thirty-three million, five hundred forty-four thousand, forty-eight".