33240288 has 48 divisors (see below), whose sum is σ = 87783696. Its totient is φ = 11013120.

The previous prime is 33240271. The next prime is 33240289. The reversal of 33240288 is 88204233.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×33240288² = 2209833492645888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33240289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16420 + ... + 18332.

It is an arithmetic number, because the mean of its divisors is an integer number (1828827).

Almost surely, 2^33240288 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 33240288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43891848).

33240288 is an abundant number, since it is smaller than the sum of its proper divisors (54543408).

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

33240288 is a wasteful number, since it uses less digits than its factorization.

33240288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2107 (or 2099 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 33240288 is about 5765.4390986290. The cubic root of 33240288 is about 321.5300682082.

The spelling of 33240288 in words is "thirty-three million, two hundred forty thousand, two hundred eighty-eight".