133784340 has 96 divisors (see below), whose sum is σ = 383545344. Its totient is φ = 34836480.

The previous prime is 133784333. The next prime is 133784351. The reversal of 133784340 is 43487331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 739050 + ... + 739230.

It is an arithmetic number, because the mean of its divisors is an integer number (3995264).

Almost surely, 2^133784340 is an apocalyptic number.

133784340 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 133784340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191772672).

133784340 is an abundant number, since it is smaller than the sum of its proper divisors (249761004).

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

133784340 is a wasteful number, since it uses less digits than its factorization.

133784340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417 (or 415 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 133784340 is about 11566.5180586035. The cubic root of 133784340 is about 511.4483244484.

The spelling of 133784340 in words is "one hundred thirty-three million, seven hundred eighty-four thousand, three hundred forty".