133349888 has 80 divisors (see below), whose sum is σ = 315247680. Its totient is φ = 55136256.

The previous prime is 133349863. The next prime is 133349939. The reversal of 133349888 is 888943331.

It is a super-2 number, since 2×133349888² = 35564385259225088, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103295 + ... + 104577.

It is an arithmetic number, because the mean of its divisors is an integer number (3940596).

Almost surely, 2^133349888 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 133349888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157623840).

133349888 is an abundant number, since it is smaller than the sum of its proper divisors (181897792).

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

133349888 is an equidigital number, since it uses as much as digits as its factorization.

133349888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337 (or 1321 counting only the distinct ones).

The product of its digits is 497664, while the sum is 47.

The square root of 133349888 is about 11547.7221996375. The cubic root of 133349888 is about 510.8940973827.

The spelling of 133349888 in words is "one hundred thirty-three million, three hundred forty-nine thousand, eight hundred eighty-eight".