33224340 has 48 divisors (see below), whose sum is σ = 93647232. Its totient is φ = 8800896.

The previous prime is 33224339. The next prime is 33224353. The reversal of 33224340 is 4342233.

It is a super-2 number, since 2×33224340² = 2207713536871200, 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 15 ways as a sum of consecutive naturals, for example, 7657 + ... + 11183.

It is an arithmetic number, because the mean of its divisors is an integer number (1950984).

Almost surely, 2^33224340 is an apocalyptic number.

33224340 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 33224340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46823616).

33224340 is an abundant number, since it is smaller than the sum of its proper divisors (60422892).

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

33224340 is a wasteful number, since it uses less digits than its factorization.

33224340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3696 (or 3694 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 21.

The square root of 33224340 is about 5764.0558637126. The cubic root of 33224340 is about 321.4786388322.

Adding to 33224340 its reverse (4342233), we get a palindrome (37566573).

The spelling of 33224340 in words is "thirty-three million, two hundred twenty-four thousand, three hundred forty".