133205968 has 20 divisors (see below), whose sum is σ = 294956320. Its totient is φ = 57088224.

The previous prime is 133205911. The next prime is 133206043. The reversal of 133205968 is 869502331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 594558 + ... + 594781.

It is an arithmetic number, because the mean of its divisors is an integer number (14747816).

Almost surely, 2^133205968 is an apocalyptic number.

It is an amenable number.

133205968 is an abundant number, since it is smaller than the sum of its proper divisors (161750352).

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

133205968 is a wasteful number, since it uses less digits than its factorization.

133205968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1189354 (or 1189348 counting only the distinct ones).

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

The square root of 133205968 is about 11541.4889853953. The cubic root of 133205968 is about 510.7102343451.

The spelling of 133205968 in words is "one hundred thirty-three million, two hundred five thousand, nine hundred sixty-eight".