133923500 has 48 divisors (see below), whose sum is σ = 299339040. Its totient is φ = 52315200.

The previous prime is 133923497. The next prime is 133923509. The reversal of 133923500 is 5329331.

It is a self number, because there is not a number n which added to its sum of digits gives 133923500.

It is not an unprimeable number, because it can be changed into a prime (133923509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18386 + ... + 24614.

It is an arithmetic number, because the mean of its divisors is an integer number (6236230).

Almost surely, 2^133923500 is an apocalyptic number.

133923500 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 133923500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149669520).

133923500 is an abundant number, since it is smaller than the sum of its proper divisors (165415540).

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

133923500 is a wasteful number, since it uses less digits than its factorization.

133923500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6291 (or 6279 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 26.

The square root of 133923500 is about 11572.5321343257. The cubic root of 133923500 is about 511.6255960319.

The spelling of 133923500 in words is "one hundred thirty-three million, nine hundred twenty-three thousand, five hundred".