133925680 has 160 divisors (see below), whose sum is σ = 384975360. Its totient is φ = 42301440.

The previous prime is 133925663. The next prime is 133925689. The reversal of 133925680 is 86529331.

It is not an unprimeable number, because it can be changed into a prime (133925689) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 436087 + ... + 436393.

It is an arithmetic number, because the mean of its divisors is an integer number (2406096).

Almost surely, 2^133925680 is an apocalyptic number.

133925680 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 133925680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192487680).

133925680 is an abundant number, since it is smaller than the sum of its proper divisors (251049680).

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

133925680 is a wasteful number, since it uses less digits than its factorization.

133925680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 133925680 is about 11572.6263224905. The cubic root of 133925680 is about 511.6283720888.

The spelling of 133925680 in words is "one hundred thirty-three million, nine hundred twenty-five thousand, six hundred eighty".