133423400 has 48 divisors (see below), whose sum is σ = 338415840. Its totient is φ = 48516800.

The previous prime is 133423357. The next prime is 133423417. The reversal of 133423400 is 4324331.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28124 + ... + 32523.

It is an arithmetic number, because the mean of its divisors is an integer number (7050330).

Almost surely, 2^133423400 is an apocalyptic number.

133423400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133423400 is an abundant number, since it is smaller than the sum of its proper divisors (204992440).

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

133423400 is a wasteful number, since it uses less digits than its factorization.

133423400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60674 (or 60665 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 133423400 is about 11550.9047264706. The cubic root of 133423400 is about 510.9879605978.

Adding to 133423400 its reverse (4324331), we get a palindrome (137747731).

The spelling of 133423400 in words is "one hundred thirty-three million, four hundred twenty-three thousand, four hundred".