133409400 has 48 divisors (see below), whose sum is σ = 413571000. Its totient is φ = 35575680.

The previous prime is 133409389. The next prime is 133409417. The reversal of 133409400 is 4904331.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110575 + ... + 111774.

Almost surely, 2^133409400 is an apocalyptic number.

133409400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133409400 is an abundant number, since it is smaller than the sum of its proper divisors (280161600).

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

133409400 is a wasteful number, since it uses less digits than its factorization.

133409400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222368 (or 222359 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 133409400 is about 11550.2986974364. The cubic root of 133409400 is about 510.9700874669.

The spelling of 133409400 in words is "one hundred thirty-three million, four hundred nine thousand, four hundred".