133958720 has 112 divisors (see below), whose sum is σ = 369661440. Its totient is φ = 45287424.

The previous prime is 133958707. The next prime is 133958729. The reversal of 133958720 is 27859331.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133958729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176582 + ... + 177338.

Almost surely, 2^133958720 is an apocalyptic number.

133958720 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 133958720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184830720).

133958720 is an abundant number, since it is smaller than the sum of its proper divisors (235702720).

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

133958720 is an equidigital number, since it uses as much as digits as its factorization.

133958720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860 (or 850 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 133958720 is about 11574.0537410192. The cubic root of 133958720 is about 511.6704422167.

The spelling of 133958720 in words is "one hundred thirty-three million, nine hundred fifty-eight thousand, seven hundred twenty".