133707280 has 120 divisors (see below), whose sum is σ = 377600832. Its totient is φ = 43819776.

The previous prime is 133707269. The next prime is 133707317. The reversal of 133707280 is 82707331.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 89419 + ... + 90901.

Almost surely, 2^133707280 is an apocalyptic number.

133707280 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 133707280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188800416).

133707280 is an abundant number, since it is smaller than the sum of its proper divisors (243893552).

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

133707280 is a wasteful number, since it uses less digits than its factorization.

133707280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1533 (or 1520 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 133707280 is about 11563.1864120579. The cubic root of 133707280 is about 511.3501072293.

The spelling of 133707280 in words is "one hundred thirty-three million, seven hundred seven thousand, two hundred eighty".