33834240 has 288 divisors, whose sum is σ = 132451200. Its totient is φ = 8110080.

The previous prime is 33834239. The next prime is 33834247. The reversal of 33834240 is 4243833.

It is a tau number, because it is divible by the number of its divisors (288).

It is a super-2 number, since 2×33834240² = 2289511592755200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33834247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 380116 + ... + 380204.

It is an arithmetic number, because the mean of its divisors is an integer number (459900).

Almost surely, 2^33834240 is an apocalyptic number.

33834240 is a gapful number since it is divisible by the number (30) 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 33834240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66225600).

33834240 is an abundant number, since it is smaller than the sum of its proper divisors (98616960).

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

33834240 is a wasteful number, since it uses less digits than its factorization.

33834240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 33834240 is about 5816.7207256323. The cubic root of 33834240 is about 323.4338535611.

The spelling of 33834240 in words is "thirty-three million, eight hundred thirty-four thousand, two hundred forty".