33243280 has 160 divisors (see below), whose sum is σ = 96422400. Its totient is φ = 10407936.

The previous prime is 33243277. The next prime is 33243281. The reversal of 33243280 is 8234233.

It is a super-2 number, since 2×33243280² = 2210231330316800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33243281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 373476 + ... + 373564.

It is an arithmetic number, because the mean of its divisors is an integer number (602640).

Almost surely, 2^33243280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33243280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48211200).

33243280 is an abundant number, since it is smaller than the sum of its proper divisors (63179120).

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

33243280 is a wasteful number, since it uses less digits than its factorization.

33243280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 33243280 is about 5765.6985699913. The cubic root of 33243280 is about 321.5397150270.

The spelling of 33243280 in words is "thirty-three million, two hundred forty-three thousand, two hundred eighty".