133491080 has 64 divisors (see below), whose sum is σ = 321148800. Its totient is φ = 49815040.

The previous prime is 133491041. The next prime is 133491091. The reversal of 133491080 is 80194331.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35951 + ... + 39489.

It is an arithmetic number, because the mean of its divisors is an integer number (5017950).

Almost surely, 2^133491080 is an apocalyptic number.

133491080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133491080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160574400).

133491080 is an abundant number, since it is smaller than the sum of its proper divisors (187657720).

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

133491080 is a wasteful number, since it uses less digits than its factorization.

133491080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3614 (or 3610 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 133491080 is about 11553.8339956916. The cubic root of 133491080 is about 511.0743467920.

The spelling of 133491080 in words is "one hundred thirty-three million, four hundred ninety-one thousand, eighty".