133355688 has 48 divisors (see below), whose sum is σ = 345334080. Its totient is φ = 42912576.

The previous prime is 133355687. The next prime is 133355693. The reversal of 133355688 is 886553331.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (133355683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16881 + ... + 23487.

It is an arithmetic number, because the mean of its divisors is an integer number (7194460).

Almost surely, 2^133355688 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 133355688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172667040).

133355688 is an abundant number, since it is smaller than the sum of its proper divisors (211978392).

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

133355688 is a wasteful number, since it uses less digits than its factorization.

133355688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6674 (or 6641 counting only the distinct ones).

The product of its digits is 259200, while the sum is 42.

The square root of 133355688 is about 11547.9733286841. The cubic root of 133355688 is about 510.9015043201.

The spelling of 133355688 in words is "one hundred thirty-three million, three hundred fifty-five thousand, six hundred eighty-eight".