133553748 has 24 divisors (see below), whose sum is σ = 311889760. Its totient is φ = 44480160.

The previous prime is 133553747. The next prime is 133553773. The reversal of 133553748 is 847355331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133553747) 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, 12543 + ... + 20601.

Almost surely, 2^133553748 is an apocalyptic number.

It is an amenable number.

133553748 is an abundant number, since it is smaller than the sum of its proper divisors (178336012).

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

133553748 is a wasteful number, since it uses less digits than its factorization.

133553748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9447 (or 9445 counting only the distinct ones).

The product of its digits is 151200, while the sum is 39.

The square root of 133553748 is about 11556.5456776668. The cubic root of 133553748 is about 511.1543096793.

The spelling of 133553748 in words is "one hundred thirty-three million, five hundred fifty-three thousand, seven hundred forty-eight".