133384860 has 216 divisors, whose sum is σ = 489620880. Its totient is φ = 30058560.

The previous prime is 133384859. The next prime is 133384877. The reversal of 133384860 is 68483331.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1878625 + ... + 1878695.

Almost surely, 2^133384860 is an apocalyptic number.

133384860 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 133384860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244810440).

133384860 is an abundant number, since it is smaller than the sum of its proper divisors (356236020).

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

133384860 is a wasteful number, since it uses less digits than its factorization.

133384860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 133384860 is about 11549.2363383905. The cubic root of 133384860 is about 510.9387554047.

The spelling of 133384860 in words is "one hundred thirty-three million, three hundred eighty-four thousand, eight hundred sixty".