133400000 has 168 divisors, whose sum is σ = 357164640. Its totient is φ = 49280000.

The previous prime is 133399997. The next prime is 133400009. The reversal of 133400000 is 4331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133400009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4599986 + ... + 4600014.

It is an arithmetic number, because the mean of its divisors is an integer number (2125980).

Almost surely, 2^133400000 is an apocalyptic number.

133400000 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 133400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178582320).

133400000 is an abundant number, since it is smaller than the sum of its proper divisors (223764640).

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

133400000 is an frugal number, since it uses more digits than its factorization.

133400000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 133400000 is about 11549.8917743847. The cubic root of 133400000 is about 510.9580862345.

Adding to 133400000 its reverse (4331), we get a palindrome (133404331).

The spelling of 133400000 in words is "one hundred thirty-three million, four hundred thousand".