133900920 has 96 divisors (see below), whose sum is σ = 436690800. Its totient is φ = 35582976.

The previous prime is 133900919. The next prime is 133900939. The reversal of 133900920 is 29009331.

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 23 ways as a sum of consecutive naturals, for example, 155451 + ... + 156309.

Almost surely, 2^133900920 is an apocalyptic number.

133900920 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 133900920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218345400).

133900920 is an abundant number, since it is smaller than the sum of its proper divisors (302789880).

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

133900920 is a wasteful number, since it uses less digits than its factorization.

133900920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1309 (or 1302 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 133900920 is about 11571.5565072293. The cubic root of 133900920 is about 511.5968404232.

The spelling of 133900920 in words is "one hundred thirty-three million, nine hundred thousand, nine hundred twenty".