133456288 has 48 divisors (see below), whose sum is σ = 305230464. Its totient is φ = 56252160.

The previous prime is 133456283. The next prime is 133456303. The reversal of 133456288 is 882654331.

It is a self number, because there is not a number n which added to its sum of digits gives 133456288.

It is not an unprimeable number, because it can be changed into a prime (133456283) by changing a digit.

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, 8781 + ... + 18547.

It is an arithmetic number, because the mean of its divisors is an integer number (6358968).

Almost surely, 2^133456288 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 133456288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152615232).

133456288 is an abundant number, since it is smaller than the sum of its proper divisors (171774176).

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

133456288 is an equidigital number, since it uses as much as digits as its factorization.

133456288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9845 (or 9837 counting only the distinct ones).

The product of its digits is 138240, while the sum is 40.

The square root of 133456288 is about 11552.3282501840. The cubic root of 133456288 is about 511.0299422178.

The spelling of 133456288 in words is "one hundred thirty-three million, four hundred fifty-six thousand, two hundred eighty-eight".