133286958 has 144 divisors (see below), whose sum is σ = 362260080. Its totient is φ = 36578304.

The previous prime is 133286947. The next prime is 133286963. The reversal of 133286958 is 859682331.

It is a happy number.

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, 690510 + ... + 690702.

It is an arithmetic number, because the mean of its divisors is an integer number (2515695).

Almost surely, 2^133286958 is an apocalyptic number.

133286958 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 133286958, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181130040).

133286958 is an abundant number, since it is smaller than the sum of its proper divisors (228973122).

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

133286958 is a wasteful number, since it uses less digits than its factorization.

133286958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253 (or 234 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 133286958 is about 11544.9970983106. The cubic root of 133286958 is about 510.8137183018.

The spelling of 133286958 in words is "one hundred thirty-three million, two hundred eighty-six thousand, nine hundred fifty-eight".