133955928 has 96 divisors (see below), whose sum is σ = 384711600. Its totient is φ = 41990400.

The previous prime is 133955893. The next prime is 133955951. The reversal of 133955928 is 829559331.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 247338 + ... + 247878.

Almost surely, 2^133955928 is an apocalyptic number.

133955928 is a gapful number since it is divisible by the number (18) 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 133955928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192355800).

133955928 is an abundant number, since it is smaller than the sum of its proper divisors (250755672).

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

133955928 is a wasteful number, since it uses less digits than its factorization.

133955928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753 (or 746 counting only the distinct ones).

The product of its digits is 291600, while the sum is 45.

The square root of 133955928 is about 11573.9331257788. The cubic root of 133955928 is about 511.6668874057. Note that the first 3 decimals are identical.

It can be divided in two parts, 13395592 and 8, that added together give a square (13395600 = 3660²).

The spelling of 133955928 in words is "one hundred thirty-three million, nine hundred fifty-five thousand, nine hundred twenty-eight".