33225724 has 48 divisors (see below), whose sum is σ = 69092800. Its totient is φ = 13970880.

The previous prime is 33225719. The next prime is 33225727. The reversal of 33225724 is 42752233.

It is a super-2 number, since 2×33225724² = 2207897470648352, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 33225692 and 33225701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33225727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83494 + ... + 83890.

Almost surely, 2^33225724 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 33225724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34546400).

33225724 is an abundant number, since it is smaller than the sum of its proper divisors (35867076).

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

33225724 is a wasteful number, since it uses less digits than its factorization.

33225724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483 (or 467 counting only the distinct ones).

The product of its digits is 10080, while the sum is 28.

The square root of 33225724 is about 5764.1759168159. The cubic root of 33225724 is about 321.4831026305.

Adding to 33225724 its reverse (42752233), we get a palindrome (75977957).

The spelling of 33225724 in words is "thirty-three million, two hundred twenty-five thousand, seven hundred twenty-four".