133693400 has 48 divisors (see below), whose sum is σ = 311799240. Its totient is φ = 53312000.

The previous prime is 133693381. The next prime is 133693403. The reversal of 133693400 is 4396331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133693403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79367 + ... + 81033.

Almost surely, 2^133693400 is an apocalyptic number.

133693400 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 133693400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155899620).

133693400 is an abundant number, since it is smaller than the sum of its proper divisors (178105840).

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

133693400 is a wasteful number, since it uses less digits than its factorization.

133693400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2084 (or 2075 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 29.

The square root of 133693400 is about 11562.5862158948. The cubic root of 133693400 is about 511.3324123935.

The spelling of 133693400 in words is "one hundred thirty-three million, six hundred ninety-three thousand, four hundred".