33250240 has 56 divisors (see below), whose sum is σ = 81930240. Its totient is φ = 12837888.

The previous prime is 33250237. The next prime is 33250253. The reversal of 33250240 is 4205233.

It is a super-2 number, since 2×33250240² = 2211156920115200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7489 + ... + 11071.

It is an arithmetic number, because the mean of its divisors is an integer number (1463040).

Almost surely, 2^33250240 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 33250240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40965120).

33250240 is an abundant number, since it is smaller than the sum of its proper divisors (48680000).

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

33250240 is a wasteful number, since it uses less digits than its factorization.

33250240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3629 (or 3619 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 33250240 is about 5766.3021079371. The cubic root of 33250240 is about 321.5621532486.

Adding to 33250240 its reverse (4205233), we get a palindrome (37455473).

The spelling of 33250240 in words is "thirty-three million, two hundred fifty thousand, two hundred forty".