133712880 has 320 divisors, whose sum is σ = 514252800. Its totient is φ = 28062720.

The previous prime is 133712867. The next prime is 133712897. The reversal of 133712880 is 88217331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1883245 + ... + 1883315.

It is an arithmetic number, because the mean of its divisors is an integer number (1607040).

Almost surely, 2^133712880 is an apocalyptic number.

133712880 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 133712880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257126400).

133712880 is an abundant number, since it is smaller than the sum of its proper divisors (380539920).

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

133712880 is a wasteful number, since it uses less digits than its factorization.

133712880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 166 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 133712880 is about 11563.4285573095. The cubic root of 133712880 is about 511.3572460095.

The spelling of 133712880 in words is "one hundred thirty-three million, seven hundred twelve thousand, eight hundred eighty".