133105398 has 16 divisors (see below), whose sum is σ = 268308480. Its totient is φ = 44018856.

The previous prime is 133105387. The next prime is 133105403. The reversal of 133105398 is 893501331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86578 + ... + 88101.

It is an arithmetic number, because the mean of its divisors is an integer number (16769280).

Almost surely, 2^133105398 is an apocalyptic number.

133105398 is an abundant number, since it is smaller than the sum of its proper divisors (135203082).

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

133105398 is a wasteful number, since it uses less digits than its factorization.

133105398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174811.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 133105398 is about 11537.1312725478. The cubic root of 133105398 is about 510.5816738896.

The spelling of 133105398 in words is "one hundred thirty-three million, one hundred five thousand, three hundred ninety-eight".