133696400 has 60 divisors (see below), whose sum is σ = 325156272. Its totient is φ = 52821120.

The previous prime is 133696391. The next prime is 133696403. The reversal of 133696400 is 4696331.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (133696403) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 31187 + ... + 35213.

Almost surely, 2^133696400 is an apocalyptic number.

133696400 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 133696400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162578136).

133696400 is an abundant number, since it is smaller than the sum of its proper divisors (191459872).

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

133696400 is a wasteful number, since it uses less digits than its factorization.

133696400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4128 (or 4117 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 133696400 is about 11562.7159439294. The cubic root of 133696400 is about 511.3362370295.

The spelling of 133696400 in words is "one hundred thirty-three million, six hundred ninety-six thousand, four hundred".