133355992 has 64 divisors (see below), whose sum is σ = 320221440. Its totient is φ = 50544000.

The previous prime is 133355983. The next prime is 133356019. The reversal of 133355992 is 299553331.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19867 + ... + 25717.

It is an arithmetic number, because the mean of its divisors is an integer number (5003460).

Almost surely, 2^133355992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133355992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160110720).

133355992 is an abundant number, since it is smaller than the sum of its proper divisors (186865448).

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

133355992 is a wasteful number, since it uses less digits than its factorization.

133355992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5912 (or 5908 counting only the distinct ones).

The product of its digits is 109350, while the sum is 40.

The square root of 133355992 is about 11547.9864911594. The cubic root of 133355992 is about 510.9018925399.

The spelling of 133355992 in words is "one hundred thirty-three million, three hundred fifty-five thousand, nine hundred ninety-two".