133168980 has 96 divisors (see below), whose sum is σ = 427924224. Its totient is φ = 30311424.

The previous prime is 133168969. The next prime is 133168993. The reversal of 133168980 is 89861331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 130954 + ... + 131966.

It is an arithmetic number, because the mean of its divisors is an integer number (4457544).

Almost surely, 2^133168980 is an apocalyptic number.

133168980 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 133168980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213962112).

133168980 is an abundant number, since it is smaller than the sum of its proper divisors (294755244).

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

133168980 is a wasteful number, since it uses less digits than its factorization.

133168980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345 (or 1343 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 133168980 is about 11539.8864812441. The cubic root of 133168980 is about 510.6629594391.

The spelling of 133168980 in words is "one hundred thirty-three million, one hundred sixty-eight thousand, nine hundred eighty".